Yay!
Good question. I hope to hear more about the new designs soon. I was wondering why it seem to be taking so long. It sounds like it was more complicated than just putting in the meta disc behind the tweeter.
I know some on this site don't care about measurements but here's the new Blade Meta https://www.shop.us.kef.com/pub/media/reference/KEF_Blade_Ref_Meta_Tech_Paper.pdf |