Trying to understand the current offer, and what the different products are. If you have X1 Producer and you upgrade for $120, do you end up with less product than those who have X1 Producer "Expanded" (for whom the upgrade is $99)?

No, there is only one version X2 Producer. It includes the features of X1 Producer Expanded. That is why X1 Producer users pay more for the upgrade.

http://www.cakewalk.com/P...r-X1-Producer-Expanded These features are all in X2

But is the X1 "Production Suite" something different than X1 Producer Expanded? The last item and the link lists production suite and was that some other bundled items?

Yes, the Production Suite was a bundle that included the X1 Producer Expanded with some extra addons. The addons included in the production suite are not included in X2. There currently is no offering equivalent to the X1 Production Suite. The addons from the X1 Production Suite will work with X2 if you already have the X1 Production Suite, if not, they are available for purchase.

OK, it looks like the suite has: "includes SONAR X1 Producer, SONAR X1 Producer Expanded, PC4K S-Type Expander / Gate ProChannel Module, and Z3TA+ 2 waveshaping synthesizer." So an X1 Producer upgrading to X2 would only be out PC4K and Z3TA+ version 2? Is there other native side-chaining in X2 Producer without PC4K?

Yes and yes