I don't know if a decision has been made but this it what has been suggested for future software update.
When under SmartSDR control on client device the built-in display on the radio would show full status info such as Temperatures, Fan speeds, SWR, RF Power output, volts, amps & other useful stuff maybe user call sign.
The ability to have multi-client capability where the user can run SmartSDR client on PC and the SmartSDR in the radio at the same time.
That setup implies two (2) computers are communicating with the flex radio. One computer in GUI client mode and the other using DAX/CAT ONLY mode. In fact you could add a third or fourth or more in the DAX/CAT only Mode. I have done this with V1 of SSDR. The setup included two Mac Minis running a VM where one was running DAX/CAT, sdrbridge and CWskimmer and the other mini was running DAX/CAT and fldigi and the macbookpro was running dogparkSDR (GUI client).
I was interested in connecting an external monitor to an M series box. I was told that the external monitor would merely duplicate the front panel display and that I couldn't (for example) display the waterfall on the external monitor while the front panel simultaneously displayed meters or something different.
For me this was a game changer and I decided there and then that an external Maestro was the only way to go for me. It would be a 6600 and not a 6600M if I changed.
I like multi-client feature as described by Tim but I can't think of any reason now to change my 6700/Maestro combination to a 6600 especially as this will be available on all 6000 series boxes. I suppose if there is a 6800 then that may be the time to upgrade!