Earlier today Gabe Aul announced the release of Windows Insider Build 14328 for both Mobile and PC. See more about the announcement here.
The link above details the new features and known issues in depth. Quickly though you can look forward to: Windows Ink, Improved Start Menu Experience, Cortana and Search Improvements and an Enhanced Tablet Experience on desktop/tablet. On the mobile build there are improvements but no announced new features at this time as the last mobile build released was 14237.
To get the updates you must be a Windows Insider on the Fast Ring.