From your call yesterday - adding packaging to the final milestone. Nothing changes unless you accept. M1 and M2 stay exactly as they are.
Logo finals, full identity system, guidelines, source files.
Everything in current M3, plus primary packaging - one SKU, dieline + print files.
"Adding primary packaging (one SKU, dieline + print files) to M3, as we discussed on the call yesterday."
Accepting re-signs the contract / The original and the change both stay on the record