Tested 2d rc6 in my usual test battle: Montebello as French.
I must say that things are really improving: specially the units behavior, cavalry charging and counter-charging, much more inter-arms support, improved behavior of arty, etc.
I did notice a new bug: in 3d view, far away units change to blocky lines (see pic - also reported in redmine).
I have an ATI 5750 card, latest 10.9 drivers and directx (June2010), and I have never noticed this previous to rc6.
Regards
>> EDIT:
Further testing revealed that this graphic glitch seems to disappear exiting and reloading the game, so it is probably a graphic memory issue.