Legacy Studio HD

I have been thinking about the Legacy Studio HD for some time now. Consequentially,while doing my research,I stumbled across the fact that the Studio HD may have upgraded about 18 months ago and now have a better ribbon tweeter(AMT?). Legacy claims the only upgrades of these speakers were done years ago when they went from Kevlar(yellow) and a square box, to what you see today with the angular cuts and the silver graphite carbon bass/midrange driver. I tend to give credence to this silent upgrade because, other than more finishes offered in recent years ,they suddenly went from $1385 CND to $1699 CND?

Some dealers are offering them at a suggested retail of $1699 while others are offer the same outward appearing speaker at $1385 making me suspect they may have changed something most likely the ribbon tweeter configuration about 18 months ago.

Would anyone else care to weigh in on this one? BTW,I have nothing against Legacy speakers as they seem well built, well engineered and have received very good reviews. This piece is just a potential puzzle for me.

Thanks in advance.

Audiopath49