IIRC Brandon hinted that he would still be working in the interest of Cakewalk/Sonar software.
Also, it seems a coincidence that all these changes since the Roland take-over followed by Brandon's move to Roland (probably to lead the development team) around the same time
Windows 8 is released....
That said, I have a gut feeling we may see 'totally' new developments by Roland that will see DAW workflow more reliant on GUI gestures (Windows 8 GUI). With this in mind, an affordable touch-pad surface controller specifically designed to work with DAW software in Windows 8....
Also, Roland will likely develop hardware range of affordable 'Touch-Screen Surface Controllers' with wireless Surface-Pen (Smart-Tools) for finer edits. Other features such as; on-screen Trigger-pads (drums) and a Piano Keyboard (these features already available in iPad) -- Other features such as; optional wireless remote transport controller and foot controllers (for hands-free transport control, perfect for solo-recordists). So I guess these features are coming in the near future for SONAR running on Windows 8.
Of course all this is just my own opinion based on events that have occurred over the past several years, so we'll have to wait and see what 'really' happens in the future. Meanwhile, there are competitors and there is the DP version for Windows. Now that MS has moved to a new form (GUI) Windows 8, I bet a lot of software developers are having to consider their directives more carefully if they want to stay competitive in future.
In that sense, it's like a whole dang can of worms has opened since the release of Windows 8.
Seth and possibly others (more) could be laid-off since Cakewalk 'development' has shifted moreso to work in a far more intergated way with Roland. Though it now 'feels like' Cakewalk has become a ghost 'parent (partner)' company.
As for Apple, its seem to be more focused on minature (wearable) and portable devices (iPad) with rumors that's it's developing a wrist-watch version of the iPad and iPhone. No doubt their direction is focused on not just portable but 'wearable' technology. Sure these minature portable devices have recording apps but in the professional sense they simply do not stand on their own compared to DAW's such as SONAR 'in regards to handling very large complex projects', that said; the point is; these Apple minature devices are better suited to 'compliment' for example; to assist as sketch-pad to get ideas down fast, and in other areas such as; remote mixer controller.