The server deploys planned for Wednesday September 26th have been cancelled. The news was given in a brief update to the the Sever Deploys blog post, which simply read:

UPDATE: There were blocking bugs found in both the RC’s planned for release this week. There will be no releases Wednesday morning. There will be no rolling restarts.

Oskar Linden also added a comment:

We found blocking issues during our pre-RC smoke tests. These issues will block the Wednesday morning RC releases. Regions will not be restarted.

Classified as maintenance releases, the deploys were to have included back-end configuration work designed to help SL run better on new and future hardware, and Baker Linden’s new Group Services code.

The postponement is the second time RC deploys have been cancelled in the last two weeks, with those planned for the week commencing 17th September being cancelled as a result of failing to pass QA testing.

As a result of last week’s RC cancellation, there was no main channel deploy on Tuesday 25th September. While the RC channel deploys might be rescheduled for later this week, depending on the severity of the reason for them being cancelled in the first place, if they do not take place then it is probable that there will be no main channel roll-out again next week.