[afripino]

Thanks for the heads up!
Looks like this is the changelog...pretty ambiguous if you ask me.

Version 3.5.4 (May 14, 2010):

* Changes in the Internet search widget
* Fixed a couple of issues around logging into Facebook and Twitter
* Backlight support for new devices
* Other bug fixes and optimizations

They changed from Google to Bing on the search widget. Some MSFT love going on.