As of April 12th it didn’t, you could check firmware update notes since then to see if that has changed but I think you need to wait for some future update still.
The 5G Adapter as Synergized Device will be supported on next major release but haven’t finailzed the time frame yet. My bold guess is to have beta in Q3 and wrap up in Q4 this year.
Unfortunatly my B One 5G is offering Synergy Mode only for WAN1, WAN2 and VWAN, not for USB.
Edit:
It’s working with B One @ 8.6.1
Edit2:
It’s only possible to select USB for the synergy controller. Howerver there’s no additional WAN Interface… just the normal USB-eth as always.
If you have 5G Dongle with 2.1.0 on B One with 8.6.1, the synergy mode would work. Also, you have pointed out a missing notes on the release notes since Beta 1. If that doesn’t work, please submit a ticket and we can follow up.