Qual a diferença entre a versão 2024 e a beta do Audition?

The beta version contains upcoming features being  tested, and possibly bug fixes that aren't implemented in the 'release' version. There is an 'update' button on the beta version near the top righthand corner detailing what they've changed. Some features stay in the beta version longer than others, depending upon their state of development and the number of bugs in them. And that's the point - beta releases aren't necessarily stable, so you shouldn't use them for 'real' work; they are there for trying and reporting back on using the 'feedback' button next to the new features one.