Looks sweet and well really looking forward to the more accurate stats, production ways manpower goes, air forces and armored forces. So we don't see something like a 10,000 men division like in Hoi3, or an air force of 5 planes. But actual numbers with instead so many tanks and far more aircraft.
The downside I seem to see is that the warfare itself looks at this point so easy and so automated. Which worries me a bit. Hoi3 was great because you could spend so much time in organising precisely your army. And micro-manage each division. This looks like you just drop an arrow somewhere and the ai does the rest. Though I can be horribly wrong, but that's what it looks like from that footage.
Also, no shit Poland didn't saw that coming in that footage, he attacked in 1936 lol.