A new set of features will go into production on Saturday the 23rd. This operation will result in about 1 hour of downtime. We aim at doing this in the morning at 7AM UTC (what's this in my time zone?).

Note: Exact downtime duration and time of the operation may vary slightly depending on how things fare. Usually we do these sort of things without anyone noticing.

Update August 16th: The upgrade on the 16th went without a hitch. We went through the upgrade a little later than scheduled but had a minimum of downtime.