GPT-5/4.5 Demo?

Actual Title:

Github Copilot Workspace Announcement (Video)

This looks very nice (thanks for the link) but no need to hype and editorialise it by invoking 4.5/5.

The existing engine is powerful enough to provide frameworks like this, see eg third party offerings like Sweep.

https://sweep.dev/

GitHub teased a new functionality called Copilot workspace in GitHub universe 2023.

My guess is this is going to be powered using GPT-5/4.5 and they might've even used the model in the demo.