Ghost 0.5.6 was released on Friday, after a week of squeezing in a great deal of bug fixes, improvements and new features. We've fully ramped up to regular releases now, and the next one will likely be this Friday again (12th) as there are yet more fixes that we want to get out there.
This is a companion discussion topic for the original entry at https://dev.ghost.org/public-dev-meeting-9th-december/