I did a git branch for my app (https://www.wisecashhq.com/ https://www.wisecashhq.com/) - in 3 hours or so I was able to pass the tests and run the app properly

I did a git branch for my app (https://www.wisecashhq.com/ https://www.wisecashhq.com/) - in 3 hours or so I was able to pass the tests and run the app properly. For larger apps (which I maintain as a freelance) I would wait a bit more though, since some gems will still have little bugfixes related to Rails 4 compatibility, most likely.