Visual Studio 2015 Update 2 has been released, however it doesn\'t detail any methods of upgrading from Update 1 to Update 2 - and no updates are shown for it in the \'Extension
A little late, but it appears you can upgrade through VS now. This seemed to work for me: under Tools > Extensions & Updates...
A window will pop up and on the left hand panel click on Updates.
You should be able to find the update there; mine had the label Visual Studio 2015 Update 2