Cubase - Currently Incompatible. (That's a deal breaker for me).
Pro Tools - An Avid employee has told me it is not yet "qualified" for Windows 10, however a Windows 10 user claims that they have been using it and have only come across one issue: it freezes when closing Pro Tools. When you restart the program, there are reportedly no errors however.
Studio One - Compatible for any version above 2.6.5.
FL Studio - Compatible.
Audacity - No reputable source yet, but it seems compatible.
Reaper - No reputable source yet, but it seems compatible, but not as effecient.
Sony Acid - No reputable source yet, but it seems compatible.
Ableton Live - Compatible.
If I forgot any DAWs that you enjoy, sorry about that! But if you find out the compatibility of your DAW, feel free to post it in the comments below! :)
So what about everyone out there? Are you upgrading to Windows 10? As for me, I am repeating two of my favourite expressions, "If it ain't broke, don't fix it" and if one day I have to upgrade, "we will cross that bridge when we come to it."