SQL Server 2008 February CTP
Well as some very good people in the community have managed to say even before me, SQL Server 2008 has shipped a new CTP version just yesterday. As I have mentioned before, this is the feature complete version which includes all the functionality planned for the final release in Q3 of 2008. I think that for most people, the big change here will be the integrated Full Text Search which should really enhance performance.
Go ahead and download it here!