Google unveils Cr-48 notebook at the Chrome Event earlier today. Engadget has a great coverage of the event.
In addition to that, Google is now accepting applications for Chrome notebook test-drive pilot program. You hae to be living in the United States and at least 18 years old. The application is open until 11:59:59 PM PST on December 21, 2010.
Note: The element Chromium has the chemical element Cr and atomic number 24.