Google Chrome OS… goodbye X11?

Google Chrome

So The Googles have just come out and said they're releasing an operating system dubbed Google Chrome OS. Cool. This part is my favourite:

The software architecture is simple — Google Chrome running within a new windowing system on top of a Linux kernel.

I use FreeBSD as well as Mac OS X on the desktop and while it does have some nice features, X11 is kinda kludgey. I'll be really interested to see what Google does as a graphical front-end instead.

The other question on my mind is: will Google Chrome OS run Mozilla Firefox and Thunderbird? :)