Exchange Server Roadmap Update

ScottSchnoll & Nino_Bilic , can either of you provide guidance for the following licensing question? I understand pricing may not be known at this time.

We are currently running Exchange 2016 CU 23 and our goal is to be running Exchange SE when available. 

As has been mentioned previously:

1. We could migrate to Exchange 2019 now WITHOUT Software Assurance
2. We could migrate to Exchange 2019 now WITH Software Assurance
3. We could wait until Exchange SE is released and migrate directly to Exchange SE (I assume Software Assurance won't be available with the new subscription model).

Specifically for option 2, how will Software Assurance impact licensing/pricing of Exchange SE, given my assumption that Software Assurance will eventually have no effect (or likely not even be available) for Exchange SE?

With Option 1, we'll spend a very large sum of money licensing Exchange 2019 for just over one year.

With Option 2, we'll spend even more and may save some initial Exchange SE licensing costs depending on how Software Assurance translates from Exchange 2019 to Exchange Subscription Edition.

With Option 3, we'd license and spend the prevailing cost of Exchange SE at that time.

Not knowing the effect of Software Assurance, I am leaning towards Option 3. 

Thank you.