Free ACT extensions from the ANSYS website as of June 1, 2022, including all previous versions available.

For information: I did not understand the logic of the Ansis website, sometimes it requires authorization with a Customer ID (for licensed clients) to download free extensions, sometimes it is not necessary. Just in case and for convenience, I downloaded all the available extensions. If you have the opportunity, it is better to download from the official site, there will be the latest version.
Full list of extensions with descriptions in the spoiler:


Release Year/Date : 2022
Developer : ANSYS Inc. and others
Bit depth : 64bit
Interface language : English
Tabletka : not required
System requirements : Pre-installed ANSYS version corresponding to the extension (see description).

What News?
Official site does not provide any info about changes in this version.

https://catalog.ansys.com/