I signed up to get Windows 10 free, as I'm sure a bunch of you guys might have....? haha
Anywho, coming from Windows 7 I'm curious how well Sonar will play with the new OS.

I'm sure it'll play fine. Sonar has always been good about updating to new technologies. I imagine it'll need to be released first though before they do final certification for it.

Some are currently using Platinum on Win 10 Preview...so it should be fine once all is 
said and done...

I'm more worried about how long it's going to take Roland to get the VS100/700 drivers out for 10.

I have Win 10 pre release installed on my backup PC, on a separate hard drive.  I have Sonar Platinum installed and what I've tried has all worked OK.  Same way with my hardware - Roland Studio-Capture, BCF2000 and Frontier Tranzport.  I did have to install the Tranzport in a Windows 7 compatibility mode, but I had to do that in Windows 8/8.1 too as the only drivers available were issued for Vista.
 
My backup PC is almost a mirror of my Primary system (in my signature), except for a different model ASRock Z77 motherboard.   

I just installed 10 preview, and I'll keep you posted. So far, so good. I am fully backed up and only have one small 5 piece Petty'ish ballad project atm.  I am a retired Mac/Windows certified tech so figured I'd help out the community and report any issues I have.

Reserved my lappy Home Premium upgrade yesterday.

They are rolling out already??? Good lord....

Edit ... Reserved and received aren't the same.... Must take note..

I still cannot get the "Get Windows 10" app to show up on my Win 7 Pro machines.
 
1. I am on Service Pack 1
2. Automatic updates are turned on
3. All machines are up to date (via Windows Update)
4. All machines have been rebooted
 
The only machine that has it is my lappy which is Win 7 Home Premium.
 
WTH am I doing wrong?
 
Right now all I want to do is verify that my DAW will run Win 10. The lappy is good to go but it's a non-DAW.

You aren't running window enterprise?
Otherwise they are probably ignoring you on purpose.