From the announcement:
As a true sequel, this game moves the battle away from the common Western Front focus of World War II and refocuses on some of history’s most brutal and devastating conflicts on the Eastern Front, challenging players to take command of the iconic Red Army and repel the Nazi invaders from the very gates of Moscow.
It is interesting to see the fighting taking place in the Soviet Union for once, as in World War 2, that is where the most intense ground combat took place, while Stalin urged the allies to open up a second front. It’s a setting that is quite often overlooked. No release date has been given, but it is expected to ship sometime in 2013.