Is there going to be code available for us to have something out of the box, or do we have to code everything ourselves?
Dunno about out of the box, as there are any number of things that you could possibly want to do, but you can look here for starters:
DIY Music Electronics. Electrosmith has 13 repositories available. Follow their code on GitHub.
There's a Slack group set up for the Daisy community as well, with channels concerning use of Faust, Pure Data, MaxMSP Gen~, C++, and Rust.