This is a bugfix-only release.
The FogBugz 8.7.57 release contained a performance regression which impacts some licensed FogBugz accounts. The symptom is that some FogBugz requests, seemingly at random but at a frequency of at least once a minute, will take an increased amount of time.
This time is spent building a cache which is meant to reduce the response time of all FogBugz pages.
In many environments the time required to build this cache is negligible, however some environments experience a delay of 5 to 10 seconds, and we’ve had some reports of delays as high as 20 seconds.
We recommend using FogBugz 8.7.58 in place of 8.7.57.