There is a new update that is coming to the BlackBerry 10 Dev Alpha devices that will be released on the 30th of January. It will be available for both the Dev Alpha A and B devices and will also included an updated version of the Blackberry 10 SDK and OS.The SDK and OS upgrade will be delivered in the same manner as all of the previous updates. If you need instructions on how to update your device you can hit this link provided by the Dev Blog.
Just like the other OS updates this brings a new version with a new twist. It includes the BlackBerry Hub, Phone and BlackBerry Maps applications. This allows for end to end integration of the Blackberry 10 applications.