With LSU's win over Tennessee today, I think all 4 #1 seeds have been determined:

Connecticut
Tennessee
Duke
LSU

Connecticut and Tennessee should get the East and Mideast Regionals, respectively. Duke and LSU should get sent to the Midwest and West Regionals. My inclination is that LSU will get the Midwest Regional since they are not hosting the 1st and 2nd rounds.

The race is wide open for the #2 seeds. Kansas State should be a lock. The Big 12 champ (if not Kansas State) should be one as well. Right now, Texas Tech, Mississippi State, Texas, and Louisiana Tech are possibilities for the remaining spots. (Right now I think the Techsters are on the outside looking in for a #2 seed, but that could change this week.)