Although most of you already know, here's the low-down:

Originally Posted by Google Chrome Releases

Highlights for this release:

Lots of crash fixes and code stabilization.
All extensions now require signing, all unsigned extensions have been disallowed.
Extensions are, at least for the moment, disabled in incognito mode.
Fixed a session history bug which prevented proper backward and forward operation for certain sites.

I would advise people to let the original author of the extensions they use to repackage them properly. You can read more about the new packaging methods here:

http://blog.chromium.org/2009/06/imp...extension.html

and here:

http://dev.chromium.org/developers/d...ions/packaging