The VOIDRUNNER'S CODEX is coming! Explore new worlds, fight oppressive empires, fend off fearsome aliens, and wield deadly psionics with this comprehensive boxed set expansion for 5E and A5E!
Check out http://mikeschley.zenfolio.com/
That should contain lots of relevant maps. Or check the WotC 2015 Extra Life page and see if you can find the maps there. Otherwise just Google it if you prefer older maps.