well, just flashed WM6 five minutes ago. something you have to know:
1) this ROM IS wm6 finally !!!
2) YES, this ROM is realy WORKING WM6, including radio rom, camera, bluetooth (maybe it's behaviour is a little bit strange, maybe it is problem of my poor old MA700 bluetooth, which i'm running on Vista - it has never run well even on xp :))
3) does not looks to be as fast as some debranded roms with wm5, but seems to be extremly fast as it is in beta stage. fast as roms filled with tmobile junk, if i could compare
4) ActiveSync 4.5 and Viasta's WMDC seems to be working much faster
5) windows update included inside wm6 is looking to do something
6) standart feautures of WM seems to be working correctly...does not look to be somehow special in this way
7) system startup is REALLY FAST - nearly like old iPAQs are...well, not as fast, but it is twice faster than WM5
Finally - this ROM seems to be...hmmm...somehow...little bit...chinese :(
Willl provide more info if my employer will not kill me - this is not a testing machine, but the only phone i have :D home I'll survive few days with chinese OS....