TechEd North America 2010 is going this week and Long Zheng of iStartedSomething is there to document that happenings.

This morning he posted some photos of the latest build of Windows Phone 7, which we haven't seen yet. Clearly and obviously Microsoft is still putting the finishing touches on the OS and even parts of the UI, making it look even better today than 4 months ago.

Worthy to note is how the lock-screen text is now smaller to fit on the screen (but looks like this was done for the ReMix events), which Long Zheng comments a lot of people disfavored. Also, the Marketpalce and Outlook "tiles" have been updated with a new look, plus overall changes to icons and other subtle bits.

Head over to check his full photo stream and begin fantasizing what it will be like to use in-real life.

[via iStartedSomething]