I was also unsure about that. A couple of YouTube videos I saw gave me the impression that it is possible to spawn a web view with your own HTML, JS and CSS. But without being able to try it out myself yet, I can’t really know if I understood correctly or not. But they did say that in terms of what you can do API wise it is very limited still indeed. But also that they are going to expand the capabilities of what you can do over time.

It being pretty limited is also part of the reason why I’ve not yet decided if I should pay for the upgrade from 11 to 12, or if I should wait it out until say Ableton Live 13 or 14 or 15 comes out.

I have the Suite version, so if I upgrade it will be a pretty expensive upgrade. Although, I did see that they also have a rent-to-own option to pay little by little over several months. And then there is also the possibility of discounts on Black Friday and Cyber Monday, which is only a couple of months away.

Also there is still a lot of content and capabilities in Ableton Live Suite 11 that I haven’t even made use of yet, including the full M4L that comes included with Suite. So even if I were to wait years before upgrading I wouldn’t run out of things to learn about the version I currently have anytime soon :)