So new version (TELUSTV-21T) end of Feb 2024 - what has changed?

If you're referring to the firmware update to help with general performance such as playback quality, that hasn't happened yet. 

The Feb update was a regular release, not sure why it's thought of as "a big system update". Our ideal release schedule is monthly, and the idea is to make incremental improvements with each release. That said, things do happen, and releases are sometimes delayed, that's just the nature of things.

You may find that some features pertain to you, such as New vs. Live badges, and some features you don't particularly care for, like fixing news series recordings or making the guide filter sticky. I would argue it doesn't mean nothing has changed if a release didn't include a feature you're looking for.  Rest assured that the features you're interested in is currently being worked on. 

Lastly, items like picture quality and recording improvement require heavy lifting on the backend, it will take many incremental releases to address the experiences. It may not be as fast as we'd like, but the team is aware of everything that's been flagged in the neighbourhood, and they are working on improving the experience one release at a time!