Something I've noticed: with the beta, I wasn't able to format my 1Gb MMC card ("card corrupted" or something like that), but it works perfectly with the "official" release. The only prtoblem: I haven't been able to rename the MMC card: it keeps labelled with "Memory Card". I'm going to reboot...
And responsiveness (?) of the virtual keyboard is much better than with the beta, it works as with OS2005.
Flashed for 10 minutes now, happy for 10 minutes :-)