they've done Birth of the Cool and Miles Ahead by now (didn't check the other labels, but JazzTrack and that other one with identical layout but different name are the most likely candidates for such "straight" reissues, it seems - it's them that did "Ellington Indigos" and "A Drum Is a Woman", too, as well as some others - here's what CDUniverse carries these days).
The 2 Ellingtons aren't actually "straight re-issues". A Drum is a Woman has never been released as a cd by Sony in the US and the Jazztrack edition includes one extra cut that was never on the original Lp. The "Indigos" is titled "The Complete Ellington Indigos" and as someone else on this board said, Sony should have done it themselves.