We will be upgrading FogBugz On Demand to version 8.11.794 on Monday, Feb. 2. We will begin upgrading cohorts of accounts starting at 1300 UTC (0800 EST) and ending at 2200 UTC (1700 EST). During this phase of the upgrade, there will be no service interruption.
After an account has been upgraded, at that account's next local midnight (as defined in their settings, which defaults to UTC -5) the account's database will receive a schema upgrade. This will cause a service interruption of up to 5 minutes, based on the size of the account.
You can find the release notes for FogBugz On Demand 8.11.794, as well as answers to common questions, at our customer service portal: help.fogcreek.com. If you have any questions that aren't answered there, please don't hesitate to reach out to us!