From what I've seen, it looks like Urchin, Bluefin, and Moray were all THERE, just not in the form we were expecting. You can see the general art and building styles of Bluefin and Urchin, but the maps have been revamped is my guess. It looks like they want the maps to have more, larger slopes and wider open areas, which you can see several times in the announcement trailer. This would make more maps attuned to weapons like the Squelchers which were often overshadowed by the stage layouts that included obstacles and other obstructions that hindered their range, but snipers could perform just fine on. All in all, I've enjoyed what I've seen from the maps even in the short look we got.