Ok, so it looks like Sonar X3 is imminent with Melodyne Essential embedded - along with a deep implentation of the Celemony ARA plugin layer technology.
Here is something which Noel Borthwick mentioned on one of the forum threads which I found interesting:
"I would venture to say that the ARA implementation in SONAR goes even further. SONAR support true independent ARA regions - i.e you can make copies of ARA clips and edit them independently. Also the ARA editing and MIDI integration is very deep, with full drag and drop support, and integrated live preview and scrub inside the melodyne editor. Additionally we were careful to not make ARA support exclusive to Melodyne. Any plugin that supports the ARA spec will be available as a region based effect in SONAR, so the implementation is very open. I worked very closely with the Celemony team all through this year and I have to say that they were a wonderful and committed team of people to work with. There have been many fixes and enhancements to ARA as a result of this collaboration, some of which were included in the last Melodyne update."
Craig has said in the past that he wished that MIDI score editors / notation programs could be available as plug-ins.
Does this ARA technology embedded into Sonar and Studio One make this any more likely?