Hi Grazio and Ventsislav,
There is no official announcement yet for R550 support on Unleashed but you may expect it to be supported on 200.9 or later version.
Once 200.9 will release, you may refer the announcement on our forum and it will include all the details about new version and supported features/APs.
Regards,
Syamantak Omer
Syamantak Omer
Sr.Staff TSE | CWNA | CCNA | RCWA | RASZA | RICXI
RUCKUS Networks, CommScope!
Follow me on LinkedIn