In Oct 2019 our repair shop was full of Apple iMac and MacBooks rendered unusable after upgrading to MacOS Catalina 10.15. However, with the release of 10.15.1 those issues appear to have been fixed. MacOS 10.15 can only be...
MacOS 10.14 (Mojave) is to be released in Sept/Oct 2018 with added features but dropping support for some models older than 2014 and all older than 2012 See full details below: As reported by MacWorld and MacRumours macOS 10.14 codenamed Mojave...