Getting GNOME 3.0
The source code for GNOME 3.0 is freely available for download and redistribution. (Users are recommended to wait until GNOME 3.0 is available through a distribution or vendor, however.) Information on how to get GNOME 3.0 can be found on the GNOME 3 website. This site also provides 3.0 live images that you can use to try it out.
In order to provide a cutting-edge experience, the GNOME 3 desktop requires hardware accelerated graphics capabilities. If this is not available, the GNOME 3 fallback desktop provides an excellent experience and incorporates many of the improvements contained in the release.