It could be a good… start.
I have just been updated to Build 9879 and here are (two of my) thoughts.
So this is what happens when you install pre-release software on a production machine.
Sure, I only trusted it as far as a second SSD with Windows 7 installed, but it would be fair to say that I immersed myself in the experience. It was also not the first time that I evaluated upcoming Microsoft OSes on my main machine, having done the same for Windows Vista and Windows 7 as both were in production. Windows 8 was the odd one out, which was given my laptop. In this case, I was in the market for a new SSD and was thus willing to give it a chance, versus installing Windows 7 again.
So far, my experience has been roughly positive. The first two builds have been glitchy. In the first three days, I have rebooted my computer more times than I have all year (which is about 1-2 times per month). It could be the Windows Key + Arrow Key combinations dropping randomly, Razer Synapse deciding to go on strike a couple of times until I reinstall it, the four-or-so reboots required to install a new build, and so forth. You then also have the occasional issue of a Windows service (or DWM.exe) deciding that it would max out a core or two.
But it is pre-release software! That is all stuff to ignore. The only reason I am even mentioning it is so people do not follow in my footsteps and install it on their production machines, unless they are willing to have pockets of downtime here or there. Even then, the latest build, 9879, has been fairly stable. It has been installed all day and has not given me a single issue. This is good, because it is the last build we will get until 2015.
What we will not ignore is the features. For the first two builds, it was annoying to use with multiple monitors. Supposedly to make it easier to align items, mouse cursors would remain locked inside each monitor's boundary until you provide enough velocity to have it escape to the next one. This was the case with Windows 8.1 as well, but you were given registry entries to disable the feature. Those keys did not work with Windows 10. But, with Build 9879, that seems to have been disabled unless you are currently dragging a window. In this case, a quick movement would pull windows between monitors, while a slow movement would perform a Snap.
This is me getting ready to snap a window on the edge between two monitors with just my mouse.
In a single build, they turned this feature from something I wanted to disable, to something that actually performs better (in my opinion) than Windows 7. It feels great.
Now on to a not-so-pleasant experience: updating builds.
Simply put, you can click "Check Now" and "Download Update" all that you want, but it will just sit there doing nothing until it feels like it. During the update from 9860 to 9879, I was waiting with the PC Settings app open for three hours. At some point, I got suspicious and decided to monitor network traffic: nothing. So I did the close app, open app, re-check dance a few times, and eventually gave up. About a half of an hour after I closed PC Settings the last time, my network traffic spiked to the maximum that my internet allows, which task manager said was going to a Windows service.
Shortly after, I was given the option to install the update. After finishing what I was doing, I clicked the install button and… it didn't seem to do anything. After about a half of an hour, it prompted me to restart my computer with a full screen message that you cannot click past to save your open windows – it is do it or postpone it one or more hours, there is no in-between. About another twenty minutes (and four-or-five reboots) after I chose to reboot, I was back up and running.
Is that okay? Sure. When you update, you clearly need to do stuff and that could take your computer several minutes. It would be unrealistic to complain about a 20-minute install. The only real problem is that it waits for extended periods of time doing nothing (measured, literally nothing) until it decides that the time is right, and that time is NOW! It may have been three hours after you originally cared, but the time is NOW!
Come on Microsoft, let us know what is going on behind the scenes, and give us reliable options to pause or suspend the process before the big commitment moments.
So that is where I am, one highly positive experience and one slightly annoying one. Despite my concerns about Windows Store (which I have discussed at length in the past and are still valid) this operating system seems to be on a great path. It is a work in progress. I will keep you up to date, as my machine is kept up to date.