I just visit FreeBSD snapshots page and see FreeBSD 8 current available in FTP.
If you wish try it you might visit their Snapshots Page.
Whats new in FreeBSD 8, a few page or blog already write about it, such as :

FreeBSD - What’s cooking for FreeBSD 8? , Ivoras documentation.
FreeBSD 8, Farokhi already test it .

Great [...]

Click here to read more from freebsd snapshots