Xperia X10 Mini software update

Much to my surprise I discovered a software update for my X10 Mini last night which I've now installed and now have a Backup & Restore app,Skype and Windows Live Messenger.

But the best thing of all appears to be considerably improved battery life,much better,previously I'd fully charge it overnight and it'd be down to 5-10% remaining by the time I got home from work at about 6.30pm (this is with moderate use of Facebook,Gmail,Twidroyd and Foursquare through the day) but now with the update I fully charged it last night, got home this evening and there must have still been, at a guess, at least 25% remaining! Anyone else who's installed this update noticed an improvement as well?