3rd party stuff seems to be a promotional activity from the 3rd party. The AAS session stuff has also come with my Korg NonoKeys. I had the full AAS (Pre Strum) so it didn't effect me, but other like AD1, hooked me on to their products, and the 3rd party made some money. Breverb and ReMatrix, fulfill my needs, but the confidence in the company led me to get VKFX. To upgrade TH2 (sit on the fence about 3), but when I decided against the Sampling route for Bass guitar, having now been hooked by Overloud, I got the MarkBass. So I'd think these small incentives to pick up 3rd party stuff would still come along.
Developments in the program I expect that we are going to see these as part of the deal. How could they separate bug fixes and developments, when the two go hand in hand.
Stuff like the Engineering Suite, I don't know. I wouldn't be too disappointed if I am now missing out on these and they were now paid add ons, but I'd hope for an incentive price over someone purchasing from outside Cakewalk. As they would be competing with the likes of fab filter.