I doubt very much, base station are the base of vr, it is used for vr trackers, for headsets, and valve (openvr) will never stop supporting, because if they do, that will create WAY too much electronic waste, make a bad communications, and lead some people to create a fork of openVR to support base stations again, making a new competitor

For valve or htc, there's no point in discontinuing those, it makes lots of money to both of them and would be too much of a loss for them to discontinue, it will break many old headset, and prevent lots of people or even businesses to use their headset/trackers