With PhoneGap having been discontinued, you'll need to find a replacement when it's time to update your app. Cordova still works great, so you won't have to make a lot of changes.

Have a look at VoltBuilder as a replacement for PhoneGap. It does the same job (or more) and it's up to date.

Disclosure - I'm on the VoltBuilder team (and a fellow Canuck). I'm happy to answer questions.