Windows 10 Mobile Build 10512 screenshots have leaked in China and though these hardly reveal any new changes, as per the leakster it is a much more stable build. The screenshot reveals that the next build will come from TH2_RELEASE branch and Build 10152 now is most likely candidate.
The screenshots are in Chinese, and don’t show anything new. Windows 10 Mobile is pretty much feature complete at this point, so it is unlikely we’ll see any new changes before it RTMs in September. Considering Windows 10 Mobile development has jumped over to TH2 (Threshold 2), which for those who don’t know is codename for Windows 10 Update 1, the RTM build will match that of Update 1 for desktops, meaning Windows 10 Mobile will launch with Update 1, bringing PC and mobile up to date.