Here is the descripion from universals website. The set will be 3 discs in slim snap cases (like sea 5) with an outter box

These comments make it seam that this might be it for universal as they mention "one last time", my personal opinion is that the sets are to profitable to ignore and that the newer ones will be released at some point in time

Universal Comments:
It's time to dust off the rumpled trench coat one last time as the final two seasons of the original series of Columbo comes to DVD for the first time ever! Reunite with four-time Emmy winner Peter Falk as he takes on some of his most deceptive mysteries yet and asks all the right questions in his trademark offbeat style. Along for the final cases are a dossier of guest stars that include William Shatner, Jamie Lee Curtis, Kim Cattrall and Ed Begley, Jr. The landmark crime series 1970's comes to a captivating conclusion in these final episodes, but you can always count on everyone's favorite police lieutenant to come up with, "Oh, there's just one more thing'."

Hmmm could that last line be a hint at the release of the TV movies?