RA Knowledgebase Article 1066410 is the 5069-SERIAL FAQ was updated yestersday, detailing that the full suite of DF1 protocols (Full, Half Master, Half Slave, Radiomodem) and DH485 will be supported.
Version 2.011 firmware is on the PCDC now, but I don't see a new AOP.
I recommend planning some time for functional testing on any fresh firmware release before widely deploying it, but I'm glad to see this available, bringing classic serial connectivity to the 5069 platform.