There is a new windows 10 mobile build 10136 made available on july 17. It has a number of enhancements and minimal ui changes. All the features ranging from cortana to photos app has a couple new tricks added to it. Overall it is still far from a finished product and there are a number of user interface glitches and bugs, though this is a significantly more stable version than the last one. If you have given it a trial, do share your expereiences. To try out the build, register yourself with the windows insider program, download the windows insider app and update it windows 10. Also if you have already installed windows 10 mobile build (early versions) you will have to revert back to windows 8.1 using windows phone recovery tool, and then get this OTA update. Do not try this on your primary phone device.