Fritzbox 4040 MU-MIMO support?

Does a Fritzbox 4040 support MU-MIMO (or Wave2) with OpenWrt?

On a lot of freifunk pages I found that info but officially from AVM it does not support MU-MIMO. I couldn't find anything about it in OpenWrt doc.

As it is ipq40xx based, yes, it should. Also boxmatrix confirms this:!Box_4040

Yeah, I also saw that.

Anything else that cofirm it?