Is it officially out of beta? I tried it a couple weeks ago and found that it didn't successfully re-provision several of my add-ons.
Re:Introducing Heroku Fork
by ryandaigle on Thursday June 27, 2013 @04:55PM
(#5954648)
Add-on provisioning can fail (independent of fork). In that case fork still continues the rest of the process.
If you find it's always the same addon(s), please let us know.
Finally it came out of beta... Probably one of the best features for a sane development workflow.