I was excited to read about this myself. After spending time with my Origin and relying on the Origin modules to make vague recreations of the Prophet and Oberheims, I'm hopeful that Arturia includes both the Prophet OSCs and filters in the upcoming update, and the SEM modules in the next one.
As far as templates go, even though Arturia promised the ARP 2600 first, I think they should produce the CS-80 first, simply because it's so easy to make a 2600 with modules. I have a 2600 "template" in my patch list in the Download section with a few patches using it. The CS-80 uses a bit too much of the CPU to get full 8 note polyphony out of it, if you recreate it as best you can using modules. But it sure sounds authentic!
One more note on templates. They should be as loud as an instrument made with modules. The MiniMg template output is too low, and should be louder. I'm also annoyed that the template includes hard sync, but the Mg modules don't.