It's been confirmed that even with the update, the Xperia X10 won't get multi touch because the hardware can't support it, so it doesn't matter what updates are thrown at it
![Frown :( :(](/styles/smilies/google/frown.png)
.
On that note though, I also know that the X10 Mini, the screen/hardware IS capable of supporting multi touch but, SE have said they won't be enabling it, they didnt say why but, i'd say its because the X10 and possibly the X10 Mini Pro don't support it. - The screen is made by a different manufacturer for the X10 Mini compared to the X10 and X10 Mini Pro.
With regards to what it'll bring, well obviously Android 2.1, which will also mean more apps are compatible with the phone. Shortly after another update will be released to bring HD Video Recording support.
They haven't confirmed whether Live Wallpapers will be made available upon release of 2.1. I assumed it would but, have since found out, manufacturers may disable it, so idk
![Frown :( :(](/styles/smilies/google/frown.png)
. I probably wouldnt use it but, I hope they include it. I normally buy my phones sim free but this one I got on an 18 month contract :O.