I just bought v1 passives a month ago and am really enjoying them. And now Mr. Gutenberg says "if the LS50 Meta’s are a 10, then the originals are a 6.5." That is a pretty big jump in incremental performance. Sigh.
I saw Steve Guttenberg's review and he is mighty impressed. In fact, he called it a breakthrough product. I have the KEF LS50 wireless ... so tempted to sell them and get these instead. 
I wonder if this means the speakers can be placed closer to the front wall? I expect the same Meta tech to go to the Reference line.