This looks like a great release. Lossless embedding of PDFs seems like it would be useful in many scenarios. I'm surprised with how much better the character-level justified text actually looks. And I wasn't even aware that it supported exporting HTML. Typst—both the tool and the language—are more robust and enjoyable to use IME than something like Markdown, Pandoc, Org mode, and other formats, so I'll definitely consider using it for my next web project.
My only concern is backwards compatibility. How committed is the team to supporting older syntax? What will happen in a year or two from now when I have to generate a PDF from a .typ file written with version 0.13? They mention deprecations in v0.14, so I assume that I should expect breaking issues. I suppose only time will tell how difficult upgrading will be in the future.
This was a big problem for me when using LaTeX, which is why I maintained a TeX Live Docker image with the exact version and dependencies I needed. Upgrading it was always a nerve-racking ordeal. Since Typst is a single binary, this should at least be easier to manage.