The tech trees have been changed to packaged upgrades instead, crews are on with limited functionality (no accelerated training on elite tanks and no perks yet), and they are missing some US and German armor (like most of the turreted TD's and upper tier lights) and there are currently British heavy tanks and TD's only with more to come prior to launch. Current maps are sand river, malinovka, mines, cliff, westfield, mountain pass, and province (which is tier III and below only). Controller support is good and 3 man platoons are implemented, and friendly fire is currently limited to HE splash damage.
I currently have the tier X Germans (JP E-100, E-50M, and E-100) plus I kept my Tier IX JadgTiger. I have my tier X Americans (T110E3, T110E5, and M48 Patton), plus I kept my tier IX M46 Patton, M103, and my M41 arty. And lastly the Tier VII Black Prince and the tier VIII AT-15 on the British side. There are a couple relatively big clans (mine is around 150 members and I command a 25 man company).
Really the biggest drawback is that the number of people on the 360 using mics is a lot lower than on the PC, so platooning and good communication is a must. We are currently somewhere between the 8.6 and 8.7 patch versions.