Consequently we are resuming work on SS3 and are committed to taking SS3.gemstone.com into production.
The warning that packages stored in SS3 will not be preserved beyond the Alpha period has been withdrawn and we have instituted daily backups for the site. We are still in the alpha period, but the basic operation of the site is sound. Tobias Pape has bugfixes queued up for most, if not all of the outstanding bugs and we will be working towards pushing the fixes into production over the coming weeks.
It should be noted that some mcz files cannot be stored in SS3. We plan to characterize and fix the known problems with loading mcz files.
Please report issues you run into with the SqueakSource3 issue tracker.
When we’ve addressed the initial crop of critical bug reports we will move into a short Beta period and then transition to full production. In the interim, if you are willing to put up with the current set of bugs in exchange for stability, then you should consider hosting your project on SS3.
With that said, keep in mind that work on SmalltalkHub is continuing and I understand that there is an active project to improve the reliability of www.squeaksource.com, so carefully consider the impact on your users before moving to SS3. SS3 is intended to be a stable alternative until SmalltalkHub is brought online and www.squeaksource.com is stabilized.
 Photo by http://www.flickr.com/photos/marcus_hansson/87885327 / CC BY 2.0