I think its gonna take a long time, not before next year probably as MS recently started taking requests for added features to WP 7.8, which means its still far away from finished.
There is a good reason to expect it's just around a corner to come to us. For example in Finland if you buy a new Lumia 800, it comes with wp 7.8. So let's be patient!
Yeah, we have been waiting way too long for this update..... please do not make me switch to another phone brand Nokia!!!!
Guys... I received 7.8 update for my Lumia 800 today I was informed that the update is available when i visited Nokia Care for some other issue. When i asked them why my zune didnt show me any updates?, they told me that it is not available through Zune. But, it can be updated at the nearest Nokia Service Center. Try your luck. Am from India.. Not sure about other countries though.. !!
Few features which i found in this update was
i. Resizable tiles
ii. Bluetooth enabled for file sharing
iii. Squared tiles for notifications in Whatsapp and other apps, which were previously circles.
Havent explored completely ...
Don't know about the 800 but it is soon for the 900 on AT&T
Story out today from wpcentral.