Google Chrome 4.0 (with Extension Support) released for Windows

What do they mean by "Ruby support"?

I tried the Chrome beta for OS X yesterday, and deleted it once I noticed that there was no way to edit bookmarks.

I wonder how long until the dev channel features 5.0 builds :)

According to the comments it seems it is slower, buggier and in some case broken for some users.<p>Guess I see no reason to switch from FF 3.6 right now.