For information I updated my very capable 6 yr old HP Compaq desktop computer to Windows 10 which I use mostly for semi professional studio audio recording and production.
I find Windows 10 an excellent UI improvement to previous Windows versions and whilst Sonar Platinum seems to work great so far
I DEFINITELY DO NOT RECOMMEND LEAVING WINDOWS 7 or 8.1 YET!!!
Having researched the net I discovered that of all the audio interface manufacturers I checked Focusrite seems to be the only one with proven advanced beta testing of audio drivers for Windows 10 - but on downloading the latest updated mix control driver recommended by Focusrite I have continuous clicks and pops regardless of audio settings in Sonar and even when using windows media player.
I did however find a workaround - using generic low latency driver (I believe it came as part of a cubase / steinberg software install which you can get if you download a free trial) and my standard PC soundcard windows media player is fine and I can even run a 25 track audio Sonar session with many plug ins at the minimum allowed 10ms latency with no issues using the generic driver! It thus seems Windows 10 has improved audio latency performance for OM sound cards.
It also seems Focusrite beta drivers are not yet solid and reading the net every other manufactured is well behind - so I'd say wait because although I have a workaround I can't use my 6i6 interface, only the PC soundcard - and from what I have read I fear this could be the case for another 6 to 12 months
Some other info.
Since upgrading to Windows 10 my Sonar Platinums session now can't locate my waves vst3 plugins already in the session - I get a message saying waves plug ins missing but have checked waves license centre etc and they are available on my recent new custom PC running Windows 7.
I am fortunate as I have 2 dedicated PC systems for music production which is why I chose my old (but reliable) system to trial the upgrade to Windows 10 - on my experience don't do it yet it's way too early