Microsoft just announced at BUILD 2016 that Windows 10 Insider Preview build 14295 is available for PC and mobile download for Slow Ring registered users. This practically means that the official ISOs of the new version will be released soon versionpreview. 
The build was originally released last week for the Fast Ring subscribers, and it seems that the feedback they had with them was encouraging enough to push the build on the Slow Ring so directly.
As we mentioned above the build push to channel of the Slow Ring also means the immediate release of ISOs. So in the next few hours they will probably appear and you will be able to download them and perform a clean install.
The update mostly contains bug fixes and performance improvements and does not bring many changes specifically for Insiders.
Let us remind you that from this build of Windows 10 o Microsoft Edge starts supporting extensions.
