This is all speculation until things are confirmed by Waves themselves. Which might or might not happen on Monday. Maybe later.
Here are two posts from Bargain Discussion, since you didn't provide any source.
I've read further, spent some time on search, even went to the VI-control forum that is referenced (and features some more... fellow "critical" KVRians)... I didn't see any third party vendors that said with utmost certainty "subscription only".
So at this point, it's still speculation that they might go this route. Even I only theorized that after the Best Service news post.
Again, we might know more on Monday.
Doesn't change the fact that Waves' announcement was very vague, and third party vendors have been like "WHELP, this is it, good bye". Which of course results into users questioning what is going on. So the radio silence isn't doing any good here. Never does (also see iZotope with discontinuing a lot of their plugins overnight, and taking several days to address that!).