I don't know how many there are, but I just played 3 new maps (once each) for Clash:
They were Awesome! In my opinion.
The maps seem to cater to different weapons than previous maps, which should simmer the "wahhhh I don't like Shotguns" concerns.
I love the fact that the maps are more complex with a far more developed "vertical aspect" and many different approaches to get to a particular location. The usefullness of teamwork will likely be more important with the new maps also.
Just my opinions, what do you all think of them?
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Oh yea crucible is a thing