an annexed West Bank and Gaza under Israeli army control.
That's the plan, right there.
Actually, the plan was to annex Gaza too, but it's looking like Netanyahu isn't going to be able to keep sabotaging cease-fire deals long enough for that to happen. So the fallback position is to hold the Philadelphi corridor so that Gaza is completely encicled, so that Israel can fully control the flow of food and water and can prevent foreign access (and most notably foreign journalists), so they can then carry out their final solution for Gaza unhindered, and annex it sometime later.