We've been running Myriad on one of our test rigs here for nearly a year on Windows 10 Tech Previews using an Axia driver, and other than problems when a full new preview has been pushed out causing the Axia driver to have to be reinstalled (not unfair when the entire OS is removed and re-installed from under it!) it's been rock solid.
As with all new Operating Systems i wouldn't rush into rolling it out, let other people find the issues, but you can almost consider it to be a Service Pack of Windows 8.1 so if you're comfortable with Win8 then Win10 should be fine.
We'll start full in depth testing once the final Win10 release is made available to dev partners (should be in the next couple of weeks or so usually) and assuming all is well, then we'd expect to make put it on the supported OS list fairly quickly - probably by late summer I would think.
Peter Jarrett, Technical Director
Broadcast Radio Ltd.
Bill Bailey: No win, no fee, no basis in reality. Just a room above a minicab office in Acton and a steady stream of greedy simpletons whose delusion is only matched by their clumsiness