Do you realize how long they have been talking about getting rid of VOR and TACAN stations? I'm sure the time is nearing, but I don't see it happening that quickly. We still have NDB's scattered around the PNW and AK, and that has been an obsolete system (aside from their use in parallel with ILS) for longer than I have been alive, short of maybe island use.
Keeping in mind this is purely conjecture, but I have a feeling that NDB integration into ILS is a big part of why they are keeping up with maintaining the NDB system. Slowly over time I think you're going to see a lot of the Compass Locators and Marker beacons being replaced by GPS fixes (already on a lot of ILS approaches) and once the NDB requirement for ILS is removed, then the remaining NDBs won't make much of a case for keeping them around (not part of the en route structure, sensitive to wx etc).
For the military, however, I'm sure it'll be around for a while since in durkistan, they don't have a lot of VORTACs...
/end bullshit