Video chat, but WiFi only for now, and also only iPhone 4 to iPhone 4 for now. Really surprised it didn't also work with iChat on the desktop out of the gate. Thats the biggest disappointment for an old coworker.

PDF support added to iBooks is nice. I bought GoodReader for my iPad for PDF viewing, and it's ok at best.

I'll have to digest the rest of the news later.