There's an open map pack at MechCon. Have pictures, will try to upload later. Double sided.
Foohills 1&2
Forward base
Streams. This one has crossing points that are Level 0 water, so it isn't a deathtrap for lights.
Open Terrain 2&3. Note these aren't the same as the old 'open terrain' maps, and despite the name have notable amounts of hills and woods
River Com Center
Lakes
Rolling hills 1,2,3
Woodland
MSRP is 30 usd, so only arms, no legs needed.
Bad news - available Feb - March, according to overheard rumours. Reason given was distributor politics/optimization