Slow adaptation of KT150 by amp mmanufacturers


I am surprised that more audio companies have not jumped on the KT150 by now. I know there are several manufacturers such as AR, Jolida, Primaluna, Icon and Allnic that have amps that are able to use this tube but I thought more would have by now.

The vast majority of reviews from people who have heard the 150 have been very positive. Any info on other companies who may have something in the works?
bajaed
Octave has been working on a new integrated that will use the KT150's (and possibly a new amp). The KT150's can be used in the V70SE and the V110 but all you would get is the sonic sound of the 150 not any additional power per Andreas Hoffman.

I also heard though the grapevine Tung Sol is working on a KT180 but haven't seen anything in writing.
I see the Octave V80 SE is out with KT150's. Anyone have a chance to hear it yet?