Boyega just posted this on his instagram. I love how the lights are wired up for a charge & flash-on-blast or whatever you want to call it. Looks pretty much like Poe's Ep VII blaster, though.
That would be awesome. I'm really taken with the flash-on-blast. Such a simple change, but one that really sells the effect way better than a single color (which often comes across too toy-like to me). Very, very cool.