some discussion over on the 650b forum. Looking to be an RC level Spark and Scale in the works. Appearance would be about the same as those bikes, as they are already used for 650b conversions, though I imagine the BB would be adjusted a bit.
I'd drop the coin on a 650b Genius LT in a heartbeat. Alas...
previous versions of Scott Spark are listed as 27.5/650 compatible.
27.5 wheels looks promising for those who are not convinced by 29" wheels.
After scott demo days and testing of 26 and 29 versions I ordered the new 26" spark RC.
This bike was just fantastic and real improvement over my already excellent "old" spark 10.