There have been a number of deadlines that have passed. IIRC, the last stay of execution was granted in April of 2015 and was indefinite.
At some point I would imagine that testing for the repack is going to force some of these translators (those between RF 2 and RF 36) to shut down their NTSC shenanigans.
Thus far all the talk has been about the primary channels. I've seen very little talk about how they're planning on dealing with translators. I think my local big four affiliates utilize upwards of two dozen translators altogether over a rather large area and some interesting terrain.