what happened to 'case' in emacs 28 ?

[Jason Vas Dias]

Good day -

I just started using emacs v28.1 today, having been
stuck with v27.2 for a long time, and now my
emacs-lisp scripts that used '(case V (va x) (vb y)...)'
now fail with the error message:
 "Symbol's function definition is void: case"
 - why this ABI breaking change ?

What was wrong with 'case' ?

Now I have to write my own 'case' macro, I guess?

All the best,
Jason