Microsoft rolled out its latest Windows 10 Mobile Insider Preview, build 10512, to testers on the Fast ring yesterday - much to the relief of Windows Insiders, whose frustration was growing after more than a month had passed since the previous build, 10166, was released.
The wait for 10512 was considerable, but Microsoft didn't simply waste those weeks away - indeed, it seems a great deal of that time was spent on making big improvements to the new OS.
The release notes for build 10512 included a list of major fixes and improvements over 10166, but Microsoft's Gabe Aul says that those examples were just a drop in the ocean:
In fact, over 2,000 fixes were introduced in build 10512, addressing various problems and bugs in 10166. Even so, the latest build was still released with a range of known issues.
Microsoft has previously stated that the OS is now "significantly feature complete", and that it will focus primarily on improving Windows 10 Mobile's user experience, performance and stability in the remaining pre-launch builds. The fact that there are still issues in 10512, despite the huge number of fixes that it brings, shows that there's still plenty of work to do.
Aul implicitly acknowledged this too - in a further tweet, he said: "We still have a way to go with Mobile before we're final", so don't expect the RTM build anytime soon.