You sound like you are surprised that they re-released these movies in IronPacks?
After last year, I deliberately held off buying these movies (except for TS 1 and 2 which were $9.99) knowing full-well that IronPacks were coming.
If I were you I would hold off on FANTASIA as well. There are a bunch of us trying to drum up interest in a Spring IronPack 12-weeks of Disney on the Future Shop forum.
Unless you're happy to double-dip, I would wait. On the other hand, you could always sell your amaray later and recover some of the cost.
Retailers know that most people purchased PRINCESS AND THE FROG. If they don't re-release it in IronPack, then people won't be buying it again -- it's that simple!
The double-dip IS the message!