I'm pretty sure that a few details about the In-Game mode are somewhere. In short:
- no 2d/3d for version 1 (IF I ever take on the work of a 2d display I want it to look realistic. I don't even like FM's 3d engine, sometimes it is just better to leave things to your imagination

).
- Obviously the game will run in "real-time", you can start/stop and change speed at any time.
- Interesting scenes will be shown with PbP text, not as in EHM/FM as "one line a time" but in a PbP-Textbox like in OOTP.
- In addition you have a rink on the screen showing you various elements as Shots (in every form) with a small flag and on the side you get a more detailed info. Think NHL Gamecenter.