I played for about an hour on the phone today - Initial thoughts are thus:
NOTE - I am in UK and tested phone with ORANGE firmware.
Yes, the screen is big, colorful and very, very nice to look at, however when using the phone, It didn't seem all that useful, yes theres lots of real estate, but the resolution just means theres bigger gaps between icons, and further to move your finger all the time! The menus are the worst, they make you scroll around quite alot, when they could prob fit all the text on the screen (i know they need to leave space to register the touch zone for each icon, but still..)
Keyboard is not that good, the capacitive touch screen is excellent - on par with my ipod touch, but the way the keyboard is implemented is not good, its hard to type on, not all that accturate (WAY, WAY off typing on ipod touch / iphone) and positioning the cursor back over text you have already typed (say, to correct an error) isnt very accurate, and need to use the two left/right arrows quite a bit. Theres also NO vertical qwerty (remember I'm testing the phone with ORANGE branded firmware as its the only way to get it in the UK)
The software is FAST! You really get the impression theres some serious processing power under the hood, camera loads in around 3 secs, video in 720p was excellent, even waving my hand in front of the lens / panning very fast it didn't drop any frames, and the sound sync'd up perfectly.
The compass is great - just like using a real one in fact and very smooth.
For multimedia stuff, this phone really will rule all (pics, video, not so much music) but for internet / e-mail / texting, its not so great. The browser is good ad loads pages quickly, but the lack of kinetic scrolling (a la iphone/ipod touch) makes navigation a little tiresome.
Let it be said that yes, ive mentioned the iphone a couple of times in this, and no, i am in no way an iphone fan - I have an N95 8Gb which I love. Apple got so so much wrong with the iphone (we all know what it is) but they also got the on screen keyboard and browsing the web very very right - hense my comparisons here (also, everyone has used one so has a good reference point!)
Did I walk out with it - no - I'll be keeping a very close eye on the initial issues / firmware updates (if any) that come up, the biggest drawback for me is the poor text entry (I'm a texter / internet kind of guy, I don' take that many photos).
I will say its a deeply impressive bit of kit, and one I'll certainly be considering and watching over the coming months.
Any questions - feel free to ask!