We will have a scheduled maintenance window tonight from 7:00pm to 11:00pm PDT. The following changes will take place:

7:00pm PDT (0200 UTC) support.mozilla.com updates and database upgrade. We’ll be updating support.mozilla.com to pick up code updates (bug 485743) and moving the backend database to new hardware (bug 484891). Duration 30 minutes.
7:00pm PDT (0200 UTC) chat-support.mozilla.com [...]

We will have a scheduled maintenance window tonight from 7:00pm to 11:00pm PDT. The following changes will take place:

7:00pm PDT (0200 UTC) support.mozilla.com updates. We’ll be updating support.mozilla.com to pick up code updates (bug 482605). No downtime expected.
7:00pm PDT (0200 UTC) intranet.mozilla.org memory upgrade. We’ll be increasing the memory on the server behind intranet.mozilla.org (bug [...]

We will have a scheduled maintenance window tonight from 7:00pm to 11:00pm PDT. The following changes will take place:

7:00pm PDT (0200 UTC) addons.mozilla.org updates. We’ll be updating addons.mozilla.org to pick up code updates (bug 482605). No downtime expected.
7:00pm PDT (0200 UTC) tinderbox.mozilla.org updates. We’ll be updating tinderbox.mozilla.org to pick up code updates (bug 390349). No [...]

We will have a scheduled maintenance window tonight from 7:00pm to 11:00pm PDT. The following changes will take place:

7:00pm PDT (0200 UTC) Netscaler OS upgrade. We’ll be upgrading the Netscaler load balancers in San Jose, Amsterdam and Beijing to pick up code fixes. No downtime is expected.
7:00pm PDT (0200 UTC) Bugzilla Upgrade. [...]

Update:
Sorry, in all that was going on today I forgot today is Thursday and while Thursday’s are normal maintenance nights, Thursdays during release are not.
That said, we’ll be tacking on the following two tasks:

7:00pm PST (0300 UTC) mrapp-stage02 reboot.  See bug 480415 for details.  We’ll be rebooting mrapp-stage02 to pick up changes to Ethernet bonding [...]