It's what I've now started calling the Slate.com Factor (given all the "3D is Dead! Hard disks are Dead!" tech/trend/scar articles Slate tries to post to kiss up to its tablet audience):
The mainstream press, which largely doesn't use the technology, being suddenly "shocked" by a big news item...
Slate.com even got on the fan-panic bandwagon, suggesting that Warner Instant Archive was stealing all the ThisTV MGM titles (Corman Poe, etc.) titles away.
Later, however, had to update with:
That's pretty much what I guessed too--Some of the movies were just on annual license and will...
I usually try to keep up every month with InstantWatcher.com which not only updates new arrivals but also keeps reasonably accurate calendars of what will expire when.
http://instantwatcher.com/titles/expiring
(Which is where the OP probably got his list)
I usually check them every month--or...