Below are three different ways that you can access the Templates:

1) If you're using Google Chrome, you can add a new webapp from the Chrome Web Store called "Drive Template Gallery". This will put the "From Template" option back in the Create menu on Drive.

2) From an existing (or new) Google Doc, you can choose File...New...From Template.

3) You can use the Template Gallery.

Please let us know if you have any questions.