Don't expect any significant increases of brightness. The 1x 18650/ 1x XM-L2 / 1inch combination has been maxed out in terms of brightness and runtime. Don't waste time waiting for the next gen, jump on the bandwagon NOW. Even if they release a 1200 lumen version, the difference won't be noticeable (need at least ~50% to tell a minute difference).I keep waiting for the next gen. PD35. Any word on an updated model?