FourSevens have posted on their facebook from Shot a photo of a product coming Q2 this year, it's 600 lumens and weapon mountable. Looks pretty cool:
Worlds smallest weapon light with 600 lumens. Also Bluetooth smart enabled for unlimited configurability.
Tiny smart devices join the foursevens smart lineup. Availability in Q2 10,000 lumen flashball. 600 lumen weapon light. Availability in Q2.