DFS Support in Asus AC routers

[wouterv]

I decided to start a new thread based on this:

What I am really interested in to know is the status and behaviour of Dynamic Frequency Selection (DFS) support in those latest routers (RT-AC68, RT-AC87, AC3200).
...
Many other regions like Europe seems still to rely on DFS.
Without DFS there are only 4 channels in the 5 GHz band (36, 40, 44 and 48), which is barely enough to handle 802.11n in crowded areas.

Which was partly answered here:

DFS is not implemented in either the NETGEAR R8000 or ASUS RT-AC3200. XSteam doesn't support DFS. Broadcom has told me that XStream is therefore for U.S. market only, at least for now.

It is clear, XStream will not be available where DFS is mandatory on the required additional 5 GHz channels.

What about the non XStream flagships RT-AC68 and RT-AC87, do they properly support DFS?

Note: it seems ETSI is reviewing release of the additional channels (with limited TX power but without DFS).
Maybe the conclusion is that 802.11ac is dead for regions with a DFS restriction.