The release date for macOS Catalina (10.15.x) to the public is scheduled for late September of 2019. This page will be updated as new developments arise.
Catalina is currently available from Apple as a preview. It is not recommended for general use on production computers at this time.
last updated 8/29/2019 -- use http://go/catalina/ to visit again, easily
For upgrade from 10.13 or earlier, please see http://go/mojave/ as well for noteworthy changes introduced before Catalina.
Current Known Issues & Areas of Concern
- 32-bit applications will no longer be supported as of Catalina. Launching these applications has resulted in a warning message within High Sierra and Mojave. (Most common applications in use at Middlebury have been 64-bit for years.)
- MathType 7 - FAQ (MathType 8 is planned as a 64-bit app)
- For Terminal users, the default shell is "zsh", rather than "bash". Bash is still available.
- KaleidaGraph is currently still a 32-bit application and will not run under Mac OS 10.15. A 64-bit version is under development, although it will not be released before Catalina and we do not have a release date at this time. KaleidaGraph will still run under Mojave (10.14) and earlier versions of the OS.