works fine on my hack book .
modded Ati mobility 4650 kexts for 9480 1366x768 lvds just added here in the forum.
AppleHDA is new,BCM in IONetwork is newer; all gpu drivers -Intel,Nidia,ATI new.
Else new :
PhotoBooth , Preview , AppStore ,ichat, iCal, Calculator , Adressbook , Mail , Systempreferences, Systemprofiler , ilife media browser and pro-apps ( aperture/finalcut X ).
Bluetooth Seems improved and obviously a lot has been done for making OSX ready for iCloud ( beta5 is out ).
Works here (ASUS P5G41M-LX2/GB-based Hack) - Visioontek AMD HD5450 512 MB works just fine (upgraded from GM).
Was already using latest Chameleon from RC5 trunk prior to update; only non-native kexts/drivers are FakeSMC/plugins, lnx2mac RTL811x, VoodooHDA AMD HD5xxx injector (all originally used in Snow).
Haven't installed (but have downloaded) iCloud b4.
The biggest surprise is that this is a far more generic Lion than Snow has ever been (and especially after the big SL Graphics Update).