Were you able to display SSDT project template in VS2015 Update1?

I have a modified version of your project.
I can only thank you for this project which was very instructive for me.

So after Update 1 or some earlier update of SSDT they changed project type string from `SQLDB` to `SSDT` and something else happened and now my project template does not appear in project creation dialog.
I think you might have the same issue.
Do you know how to fix this?

Start by reproducing the missing project template in the Visual Studio 2015 Update 1 project creation dialog using the SSDT project type strings mentioned in the report. Investigate the modified project and its template registration to identify what changed from `SQLDB` to `SSDT`; done means the template appears and can create a project again.

Written by the indexing model from the issue text.