this is V2 of the popular "Micro H-Quadcopter for 8.5mm motors" http://www.thingiverse.com/thing:717375
it's still for 8.5mm motors, holds all common flight controllers and batteries. the top is cut out to house FPV backpacks. the printed parts are up to 25% lighter than V1.
top1 might be too thin for some, top2 is more rigid