This was discussed before on another thread. They are Japanese imports (hence the high prices at Best Buy). No information yet on whether they will be remastered or not.
I wish they would remaster and rerelease these album with either B-Sides or demos. U2 is marvellously famous for not repackaging the same ol' stuff, however I wouldn't mind this.
I hope they then do it the Elvis Costello way: releasing the original album on one CD and have a separate CD with B-sides, outtakes, live stuff, demos etc. Add some revealing liner notes and lyrics to all the songs and you've got a superb package. I think that would be good enough for me to buy everything again.