Tiki 27.0 LTS will be released in March or April 2024.
It is a Long Term Support (LTS) version and will be supported until March or April 2029 as per the Tiki lifecycle policy. This release is more about refining features than major changes. After this release, there will be major changes in Tiki28.
Supported PHP versions: PHP 8.1 and 8.2
You can see the development page at : https://dev.tiki.org/Tiki27 and all the code commits here: https://gitlab.com/tikiwiki/tiki/-/commits/27.x/ once it will be created (in 2024-01).
Major change for calendar event handling in Tiki - CRUD operations of events now go through the built-in caldav server with the help of internal method invocation (not through the webdav protocol to skip authentication phase). This has the desired consequences of event scheduling, iTIP message generation and other active plugin taking care of corresponding functionality when events are created, updated, deleted.
Several major updates to calendar functionality:
MR: https://gitlab.com/tikiwiki/tiki/-/merge_requests/3534
private calendars: new permission (tiki_p_admin_private_calendar) and ability to create personal private calendars that will be visible only to the user creating them and calendar admins; make sure all operations and CalDAV support + permissions continue to work in the same way as before with public calendars and new private calendars
https://gitlab.com/tikiwiki/tiki/-/commit/7261fa544d7f433b9fbda5ce4c74f472c1be0ada
https://gitlab.com/tikiwiki/tiki/-/merge_requests/4353
See https://dev.tiki.org/The-Tiki-27-plus-Build-System
The Tiki Unified Index was introduced in Tiki7 (2011) as an alternative to the standard Tiki search. The standard search became legacy and was deprecated in May 2018. Fast forward to 2024, and it was completely removed. See the supported Unified Index Comparison.