I think we Super 6 owners are all waiting with anticipation for the next firmware update. Especially as we wait for missing features to be added. I am now relying the mailing list update, or a message on this forum to indicate when the next update arrives. Common sense I guess 
What was added/fixed/changed in the last update is on the UDO website:
What is planned for the future firmware updates is here:
To be honest, it would be nice if there was bit more transparency from UDO in this regard. I mean for most people this synth is/was a significant investment, and so it would be good to know when we are likely able to use the unimplemented features such as: USB MIDI and MPE. I for one am very much looking forward to using my LinnStrument with this synth.