John, I think (hope) Surefire learnt their lesson about sidespill with the x200a. Hopefully they will/have found a solution that does both. Personally I don't want to sacrifice either because I can't afford both. I hope/ presume they have also upgraded the mounts from the initial x200a as well.
To answer my own question, I've done a bit more digging and it seems the laser version will be the x400. Could be very wrong though
About the output, didn't know about the 160 lumens, but like you I would much prefer something closer to 200 lumens
From recent trends though I think runtime is a strong consideration design wise. Hopefully someone will have one soon and do a review!