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 7/1/2019 -- 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.)
- For Terminal users, the default shell is "zsh", rather than "bash". Bash is still avaialble.