I gave away my last pair of M3Tis, years ago. I built this system for a friend and it'll be gone soon.
The V3s are supposed to have a new woofer with a white dust cap, a new cabinet with magnets holding the grill to the speaker and a new tweeter. Mine has the black dust cap, but I've been told it is the new woofer. Mine doesn't have the magnetic grill cover. Mine says M3V2 on the back, but Axiom tells me it's really a V3 And although I can see no difference between the tweeter in the M3V3 and the old M22Tis I'm told it has the new tweeter.
Personally, I think I have a drop dead gorgeous and great sounding pair of Axiom M3V2s. Axiom says they're V3s but I think I hear them laughing.
