When new Bowers & Wilkins 800 series will be launch?

M1 1986-1987

M2 1988-1989

M3 1990-1999

N 1999-2004

D1 2005-2009

D2 2010-2014

D3 2015-2020

D4 2021-?

I'd say 2028 with all the shuffling going on.

I was thinking the same, roughly 2028 plus or minus a year. But who knows with the way things are going. One thing you can be pretty sure of, the pricing will likely be 20-30 percent higher on each D5 model compared to the D4 counterparts. That's just the way of things I think.

Looks like the D5 will be for sale September. It looks the same as the D4 signature except an upgraded matrix frame.

Thanks for the update. I was checking the news every few weeks or so, and somehow was busy these past few days, and of course, the news came out 

Glad I did not buy the 801 D4 (several places offer good discounts)... no wonder why 

It seems like it's mostly cosmetics and minor subjective high frequency changes between all the versions. All the upgrades they've done is more for microphones and computers to discern. The average ear and room would have a hard time discerning the differences.

I believe Devialet measured the 802 D2 having the lowest frequency response at 13Hz. The D1 14Hz and D3/D4 15/17Hz. Basically all the same.

https://www.devialet.com/en-us/expert-pro-sam-ready-speakers/bw/