Supposedly, a Google representative demonstrated a private beta build of the OS to an anonymous Acer parts supplier yesterday. The pictures were grabbed while the Google rep wasn’t  looking. Here’s the highlights:

• The “elegant” install on the Acer Extensa 4620Z laptop took about 10 minutes and 1 restart
• Reboots desktop-to-desktop in about 25 seconds
• It was “amazingly fast” in its stripped-down beta form
• The blue orb on the auto-hiding “Chrome Bar” along the bottom of the UI is essentially the start menu
• Navigating the file system can be done in “exploration” (like Windows explorer) or “browser” (search based) modes
• The Chrome Bar can also host a search bar if configured
• Future Chrome OS netbooks will feature an iconified Chrome key on the keyboard similar to the Windows flag key

Source: http://chromeosleak.wordpress.com/