1.17.6 has been released. This release overall contains a significant number of fixes and improvements, the two most significant of those being an overhaul of the events system backend used for creating Wesnoth content as well as continued work on Wesnoth rendering system which fixed nearly two dozen UI bugs. Both of these should be completely invisible to players and UMC authors aside from the many bugs fixed, but nevertheless they’re also both large changes, so please make sure to report any bugs you find!

For additional details, as usual see https://r.wesnoth.org/t56090