Ryan Stewart, an evangelist for Adobe, posted a video on Youtube showing his Nexus One running the latest version of Adobe Flash 10.1. Christopher over at AndroidandMe looked at the video, and at the end noticed a new looking homescreen which leads many to believe that the picture you see below is the homescreen for Android 2.2.
Upon examining the image, it appears that new features in Android 2.2 will include an updated launcher, Android tutorial, and a new Google Search box. As for the functionality of the new Google Search box, AndroidGuys writes that:
It's possible that the widget will now allow you to select from a list of search engines. That, or perhaps it will let you select which parts of your phone to search; we'll have to just wait and find out.
The link to the video on Youtube is here.
As for when to expect Android 2.2, AndroidandMe suggests that:
Google is expected to unveil Android 2.2 at this month’s Google I/O. An increasing number of visitors to our site are running the latest FroYo firmware so it appears the update has been finalized.
Image from AndroidandMe