Nova Lake (Series 4) is already too late in development to switch, so its shipping with Celestial, and Titan Lake (Series 5) after it will be essentially a Nova Lake refresh using a hybrid tile that is Celestial's graphics engine with Druid's media, memory, and bus controllers (since Druid development has been halted).
Serpent Lake (Series 6) will be the first that can ship with Nvidia tiles, which should launch in early 2028.
Unless something changes, there will be no DGPU Celestial products.
Unfortunately, the ink on the contract is already dry, so this is the end of Intel's GPU unit.