Starting with the Public Beta and up through 12.6, there have been 172 macOS releases, both major and minor.

Some random notes, updated from the original post: This has happened a few times over the years. This is to keep the version numbers in the proper order, even when an older OS received an update after a major new release came out. Some entries may appear out of chronological order (i.e. Note: The Days column reflects the number of days between releases.

Ⓘ Leopard - First universal binary release Ⓘ Snow Leopard - First Intel-only release

(for classic Mac OS versions before 10.Ⓘ Lion - App Store only (USB stick later)

OS X Version 3.3b6, May 13, 2011, 2.0 MBĭisk image revision of Februwith added code signatures.

See the release notes for more information. Version 3.4.0 is an update to version 3.3 that adds support for OS X 10.9 Mavericks.It has also been tested successfully with OS X 10.10 Yosemite through macOS 10.14 Mojave.Besides supporting the latest versions of OS X, it also includes experiment support for the tn3270e protocoland for client SSL certificates. As a result, it's not feasible to update tn3270 X to 64 bits.The only solution would be a rewrite of the application, and there are no currentplans for a rewrite.Users of tn3270 X are encouraged to use the macintosh-tn3270mailing list to discuss alternatives to tn3270 X for Catalina.If you are a developer who would be interested in participating in an open-source project to implement a replacementfor tn3270 X, please contact Peter DiCamillo. When 64-bit support was being introduced into OS X, Apple madea decision to not support 64-bit Carbon applications. Tn3270 X was developed using Apple's Carbon framework, which wasoriginally provided for porting classic Mac applications to OS X. MacOS 10.15 Catalina is the first version of macOS which does not support the use of 32-bit applications.Many older applications, including tn3270 X, are 32-bit applications, and must be updated to the 64-bit model for Catalina.Unfortunately, this won't be possible for tn3270 X.

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