(2/2)
Stable releases will branch off of testing branches; 25.04_branch is testing.
25.06_branch therefore will branch off of 25.04_branch when ready, and 25.06 "rev0" (initial release) would be the first tagged commit in 25.06_branch.
However, the next testing branch will not branch off of stable; the "master" branch will always be a branchless development model as usual.
So. Master branch, and each testing release branches off of that, in turn later branching into a stable release branch.