Resonant Serpent
Nice. Hoping that 10 turns out to be one of the great ones and not a dud. Microsoft is offering 10 for free for the first year, even if you have a pirate copy, and then it's 30.00 a year. If this fails, there are going to be a lot of unhappy people. I'm still on 7, and will only make the jump when 10 gets a good report.

Windows 8 wasn't a dud, people just can't get over change and rather cry about it. I admit I was one of the people who jumped on the bandwagon of complainers, but Windows 8/8.1 turned out to be my favorite Windows OS to date. It's stable, better on resources than Windows 7, and the Windows 8 features are a nice touch.

FidelityMusic

Resonant Serpent
Nice. Hoping that 10 turns out to be one of the great ones and not a dud. Microsoft is offering 10 for free for the first year, even if you have a pirate copy, and then it's 30.00 a year. If this fails, there are going to be a lot of unhappy people. I'm still on 7, and will only make the jump when 10 gets a good report.

Windows 8 wasn't a dud, people just can't get over change and rather cry about it. I admit I was one of the people who jumped on the bandwagon of complainers, but Windows 8/8.1 turned out to be my favorite Windows OS to date. It's stable, better on resources than Windows 7, and the Windows 8 features are a nice touch.

Same here. I approached it with an open mind, watched a couple of orientation videos to get up to speed, and it's been plain sailing on both my desktop and touch screen laptop. I've loved 8.1. I frequently talk to people who whine about how awful it is, and it turns out they don't know the first thing about how to use the new features properly. 

One of the things I'd love to see - and I know it ain't going to happen - would be the ability to host VST's in Windows so that you could route all of your system audio through plugins. Imagine being able to insert an EQ to correct some horrible audio on a YouTube video, for instance. And of course a much easier way to route things like iTunes and Spotify through ARC2 in order to get the same hi-fidelity room correction that the plugin gives you in your DAW. Right now I've managed to get that all set up through a combination of Virtual Audio Cable and Pedalboard, but it's a pain (I have to load both apps up and switch my default audio device to VAC whenever I want to listen to Spotify through ARC2) and I would love to be able to do this stuff natively in Windows. 
 

Some more info from Build.
 
Midi
- New MIDI API now baked into Windows 10. To take advantage of these features, app developers need to write to new API.
- My Launchpad app demo, showing MIDI running just as well on a Raspberry Pi 2 as it does on full PC
- Allows shared device access (multiple apps using same MIDI device)
- Increased perf and lowered latency in the built-in wavetable synth (same synth for now)
- Improved/Updated device naming. Device can specify name and we use that first, if available.

Audio
- New AudioGraph latency-optimized API rolled into Windows 10
- Redesigned audio stack to provide a minimum of 15ms latency improvement, much more if drivers opt in to small buffers
- Surface Pro 3 round-trip latency example: 50ms in Windows 8.1, 10ms in Windows 10, using WASAPI or AudioGraph.

Wow. Finally Windows will have a better system for optimizing audio than DX.
I'm looking forward to spending thousands of dollars on applications and plugins that use the new windows audio hooks.

"...a minimum of 15ms latency improvement".
 
Wow. I've got 5.8 ms latency now, so that means sounds will come out 9.2 milliseconds before I play them! At this rate, by Windows 12 I'll just come in in the morning and listen to what I'll record later in the day.
 
Joking aside, I'm glad to see Microsoft addressing audio needs. Native FLAC support could be huge, perhaps providing a boost to the fledgling lossless music business.