2.5.6 is a new bugfix release. See the full list of changes.
Note to anyone who habitually uses the 'disband' order (Shift+D) on Caravan/Freight to help build wonders: this no longer does what you want (you'll lose half the shields). Use 'help build wonder' (B) instead.
Source code is available in the usual place. Compiled Windows packages aren't available yet, but should follow shortly; we'll post again here when they turn up.
Stable release 2.5.6
Re: Stable release 2.5.6
(followups about savegame trouble moved to Tech Support forum)
Re: Stable release 2.5.6
Windows builds are now up.