The upcoming new WWII tanksim you mean is probably this:
http://www.subsim.com/phpBB/viewtopic.php?t=48035
http://www.panzereliteaction.com/main.php
There was also an old simulation, maybe 5 or 6 years ago, called Panzer Elite, available as a Special Edition including various mods and all patches. Captain Kirk can tell you about that, so wait until his patrol pattern leads him to this place again. I wouldn't say that it's graphics are up-to-date, but they were quite good for the time when the sim was released:
http://firingsquad.com/media/gallery_index.asp/341/1
If you want to try with that one despite it's age, contact the guys over here:
http://www.pedg.org/
Nevertheless I would recommend to you to have a look at Steel Beasts Pro. It is modern era, but you won't find anything that is more hardcore tank simulation than that.