“A critical bug doesn’t mean [Drupal] just completely doesn’t work,” Buytaert added. “In fact, it works pretty well. We run tens of thousands of tests against Drupal 8 many times a day, continuously, on a cluster of hardware and all the tests pass. So the stability of Drupal 8 alpha is actually pretty high, but we’re still doing polish on the APIs and the user interfaces to make it a very high quality product.
“It’s hard to say how long we want to do that for; to be honest that’s way it’s a little hard to predict when Drupal 8 will be ready.”