KEF LS50 Meta

Could be. I wonder why that is?

Some tests and measurements are surely to come out sometime soon that either backs up the claims regarding sound absorption or not.

If so, I would hope people who care about the best sound quality possible at least would take notice.

Otherwise, yeah, its always hard to separate the hype from the substance .

I will say that based on my experience with them over the last 2 years the old ls50s are very good within their limits though and if truly made even better are an even better value now than 8 years ago. Especially if you use them with good gear and a suitable amp up front,  a good sub or two or 4 to fill in what’s missing properly, and the room is not too big.

They are still small speakers after all.   However sounds like bigger kefs will be getting similar enhancements very soon.   Nice that the proclaimed innovation was made with the product that most can afford and will trickle up not the other way around.

I did not consider the KEF Reference for my speaker upgrade because they ideally need to be placed a bit away from the front wall. It would be great if this Meta stuff makes placement of the Reference and even Blade more flexible.

A couple of other speakers that use this back wave canceling idea is of course Vivid (B&W) and Yamaha NS 5000. KEF seems to think their new way of doing this is better.

Kef has found the way to get a much BIGGER improvement using this technology than these other companies have ! This really changes the game BIG TIME for box speakers now !..

Here’s a review on these improved Kef speakers

https://www.lite-magazin.de/2020/09/kef-ls50-meta-klarster-klang-durch-verwandeltes-material/ 

 I can't wait to hear Kef's bigger speakers with this technology !!  Coming SOON !

This really changes the game BIG TIME for box speakers now !..

Not really. The KEF is still a box speaker. 

Absorbing most of the backwave as advertised sounds really good, but would like to see some tests to confirm the effectiveness

I dont know where you read that it absorbs most of the backwave. It does not. The absorber is only used on the tweeter. Not the woofer.