Let the hive mind of Engadget get that for you.
"I'm in the market for a new phone and money isn't a limitation. I'm also not partial to any particular US carrier, but here are some of the features I'd like to have: WiFi, GPS, good coverage in lots of places, push Gmail (a must!), physical keyboard (a must!), a touchscreen, decent battery life and a relatively slim body. And please, nothing that has a fruit logo on it. No offense to the fruit fans, though. Thanks!"
This 'tabs in space' feature will be quite limited with most phone resolutions.
Netfront 3.5 beta is free and has this same full screen scrolling feature.
with new Windows Mobile phones allowing for a lot higher resolution screens it should be fine :)