So I was reading the article over here.
“The game will ship with 8 maps and 2 bonus, “what if” maps (1 for each faction,) for a total of 10. The Reactor map shown at E3 2010, was a “what if” map. Wedgwood explained it was unlocked after you complete the Resistance campaign.”
So maybe there are 10 maps?? Guess we won’t know until the devs confirm though.
BTW that quote is about halfway down the article.
