STP=SoundTrack Pro, the major audio app in Final Cut Studio. The removal of the crossgrade shouldn't be news, as it's already been pointed out that the deal was up until March 19th. THat date has passed, so the deal is no longer offered. If a soundtrack pro user has waited this long, they're probably screwed. That's what happens when you procrastinate. In the "Final Cut Pro 6 To Debut At NAB? Final Cut Extreme Too?":https://forums.macrumors.com/threads/282167/ discussion thread, it's been mentioned MANY a time by Multimedia in particular that the crossgrade is gonna end soon, so postmark your offer NOW. Well I guess now is to late.
-Brian
-Brian