Guys,
Thanks for the info. Agree that the best case scenario would be to load A4 and have all and everything from A3 there, plus the new amps, cab management and the single stomp. A3 is a nice unit. Like Skyline said, it would be a drag having to bounce between two units to get everything.
Maybe the fine print is in A4 not being an upgrade but a separate software. Inexpensive to get in on the ground level, but some serious cash over time to get even the basics. Benefit as mentioned that you could just get what you want and not have many pedals that you never use. If this is the case, I can see the no brainer $99 quickly turning into a $300 what was my brain thinking.
Agree also we need clarification from IK as to what is and is not included, and what can and cannot be migrated from previous versions. If I can migrate all the stomps, racks and presets from A3, will dive in with gratitude and without question. Otherwise, waiting for a demo so see if it will actually be worth the investment over the long haul.
John