--- title: "Update center" description: "LEON is a web-based aviation software supporting flight operations management and scheduling software for business charter - Try Leon for free" url: "https://www.leonsoftware.com/support/update-center.html?start=180" date: "2026-07-07T11:41:52+00:00" language: "en-GB" --- # Update center Release notes When releasing any update of our software, which is normally twice a month, we publish here all release notes. During each release, we gradually enable new features, starting with a randomly chosen small sample of our customers. After a few days, all new features are available to all our customers on the production server (under [**leon.aero**](https://leon.aero/)). [ ## Leon 35 released 28 May 2019 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=241:leon-35-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=241:leon-35-released&catid=15) [ ## Leon 34 released 15 May 2019 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=235:leon-34-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=235:leon-34-released&catid=15) [ ## Leon 33 released 30 Apr 2019 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=232:leon-33-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=232:leon-33-released&catid=15) [ ## Leon 32 released 16 Apr 2019 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=223:leon-32-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=223:leon-32-released&catid=15) [ ## Leon 31 released 03 Apr 2019 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=217:leon-31-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=217:leon-31-released&catid=15) [ ## Leon 30 released 19 Mar 2019 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=212:leon-30-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=212:leon-30-released&catid=15) [ ## Leon 29 released 05 Mar 2019 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=211:leon-29-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=211:leon-29-released&catid=15) [ ## Leon 28 released 19 Feb 2019 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=207:leon-28-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=207:leon-28-released&catid=15) [ ## Leon 27 released 05 Feb 2019 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=206:leon-27-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=206:leon-27-released&catid=15) [ ## Leon 26 released 22 Jan 2019 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=205:leon-26-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=205:leon-26-released&catid=15) [ ## Leon 25 released 08 Jan 2019 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=204:leon-25-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=204:leon-25-released&catid=15) [ ## Leon 24 released 27 Dec 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=203:leon-24-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=203:leon-24-released&catid=15) [ ## Leon 23 released 11 Dec 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=201:leon-23-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=201:leon-23-released&catid=15) [ ## Leon 22 released 27 Nov 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=200:leon-22-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=200:leon-22-released&catid=15) [ ## Leon 21 released 13 Nov 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=199:leon-21-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=199:leon-21-released&catid=15) [ ## Leon 20 released 30 Oct 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=198:leon-20-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=198:leon-20-released&catid=15) [ ## Leon 19 released 16 Oct 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=197:leon-19-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=197:leon-19-released&catid=15) [ ## Leon 18 released 02 Oct 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=196:leon-18-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=196:leon-18-released&catid=15) [ ## Leon 17 released 18 Sep 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=195:leon-17-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=195:leon-17-released&catid=15) [ ## Leon 16 released 04 Sep 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=193:leon-16-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=193:leon-16-released&catid=15) [ ## Leon 15 released 21 Aug 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=192:leon-15-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=192:leon-15-released&catid=15) [ ## Leon 14 released 07 Aug 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=191:leon-14-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=191:leon-14-released&catid=15) [ ## Leon 13 released 24 Jul 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=188:leon-13-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=188:leon-13-released&catid=15) [ ## Leon 12 released 10 Jul 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=186:leon-12-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=186:leon-12-released&catid=15) [ ## Leon 4.11 released 26 Jun 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=185:leon-4-11-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=185:leon-4-11-released&catid=15) [ ## Leon 4.10 released 12 Jun 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=184:leon-4-10-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=184:leon-4-10-released&catid=15) [ ## Leon 4.9 released 29 May 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=182:leon-4-9-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=182:leon-4-9-released&catid=15) [ ## Leon 4.8 released 16 May 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=180:leon-4-8-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=180:leon-4-8-released&catid=15) [ ## Leon 4.7 released 02 May 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=179:leon-4-7-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=179:leon-4-7-released&catid=15) [ ## Leon 4.6 released 18 Apr 2018 [Read more](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=177:leon-4-6-released&catid=15) ](https://www.leonsoftware.com/index.php?option=com_content&view=article&id=177:leon-4-6-released&catid=15) ### Subscribe and Follow Us Below to Stay up to Date ![flight schedule software](https://www.leonsoftware.com/images/svg_icons/arrow-swirl-w.svg) ## Schema ```json { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.leonsoftware.com" }, { "@type": "ListItem", "position": 2, "name": "Support", "item": "https://www.leonsoftware.com/?Itemid=711" }, { "@type": "ListItem", "position": 3, "name": "Update center", "item": "https://www.leonsoftware.com/support/update-center.html" } ] } ```