Well Nothing is Confirmed yet ,but a gallery-like site for extensions has made itself known into the latest development builds of Google Chrome for Windows and Linux. Take a look at what presumably is coming very soon, in these development screenshots.

The Download Squad blog was the first to notice the new new thing in Chrome—namely, a jigsaw-like page corner in Chrome’s new tab page, next to a message at the bottom that reads “New! Chrome now has bookmark sync and extensions!”, with both the message and the corner piece linking to

http://chrome.google.com/extensions

As per recent remark by  Google Groups  Chrome team member Neil Baum, extensions are set to hit Chrome’s beta channel in early December. The plan may well be to launch both the updated beta and extension gallery at the same time.