I had trouble accessing the relevant video snippet even after going through the conference registration, so here's a summary.

You can view the demo at https://twitter.com/i/broadcasts/1OyKAYWPRrWKb starting around 29:00.

It's Sam Altman demoing a massive Open AI model that was trained on GitHub OSS repos using a Microsoft supercomputer. It's not Intellicode, but the host says that they're working on compressing the models to a size that could be feasible in Intellicode. The code model uses English-language comments, or simply function signatures, to generate entire functions. Pretty cool.