Nope, I'm 99% certain that only 2 stages were available for play during the testfire. I mean, I could be wrong, but I know this one never showed up for me, and most websites reported 2 stages being available.
^ Ah okay, I misread your post, sorry. It seems pretty cool, this could end up being one of my favorites. I like how it's open and there's lots of curves to go up. Should be interesting.
It's an okay map, probably not going to be one of my favorites though. I like how it's pretty open and curvy, although it's not really as fun to play on as the other maps. I like how there's so many ways to get to the enemy's base.