Well I feel silly now.  If I remove the RME interface and have only the XR18 connected, Sonar seems to be fine.  Yeah!

Hi! Need some help with new update and Windows 10. Somehow i lost my console view on my secondary monitor. This is how it happened. I usually open my console windows on my secondary monitor. When i collapsed this window, it dissapeared completely. I am unable to call it again. I tried to change views, only choosing Screenshots help me to restore console view, but with few extra steps - you need to place it on secondary monitor again. I tried to collapse it again and now lost my console view, piano roll completely. Any ideas how restore it? On Windows 7 all worked fine here. 

Sonar Platinum works great under Windows 10.
 
The problem is that Windows 10 drivers for synths are rare, and drivers for older versions of Windows are not necessarily compatible with Windows 10. That means that your synths may become boat anchors if you upgrade to Windows 10, even if Sonar works perfectly.
 
 

LumenMedia
Hi! Need some help with new update and Windows 10. Somehow i lost my console view on my secondary monitor. This is how it happened. I usually open my console windows on my secondary monitor. When i collapsed this window, it dissapeared completely. I am unable to call it again. I tried to change views, only choosing Screenshots help me to restore console view, but with few extra steps - you need to place it on secondary monitor again. I tried to collapse it again and now lost my console view, piano roll completely. Any ideas how restore it? On Windows 7 all worked fine here. 

When you say collapsed the window, as in minimize? I opened a project that I have the console view opened on the secondary monitor and I minimized it. If I press alt-2 it maximizes. Does that not work for you?

When is the next release coming?

It's here.