I didn’t mean to be ambiguous - The DS hardware almost certainly supports 4x DSD.
Which external hardware will work isn’t in PS Audio’s control.
I don’t speak for PS Audio re bridges/Octave and I don’t know what hardware the newer bridges/Octave, etc. will be using but PS doesn’t like the current output rate limits of the Bridges. Speaking of newer bridges, etc. - once again the limits might be the hardware / software of the sources, switches, etc.