Battle servers are real, yeah. I was surprised to hear that Relic wanted vCoH to have them as well, though. It's great that they are trying to bring both games into line MP-wise, even if there have been some issues along the way. Gotta respect them for that.
What are the best ways to use the T-70, and in what window? I often consider building one, but then lose my nerve and just wait for the extra 30 fuel for a T-34, which is of course more durable and more useful against tanks.
When should I be getting a T-70 up and what are the best ways to maximise its potential?