https://www.techpowerup.com/286936/intel-arc-alchemist-reference-boards-offered-to-partners Intel Senior VP and GM of Graphics Group, Raja Koduri has recently been interviewed by Japanese site ASCII where he revealed some new details about the companies upcoming Arc Alchemist gaming graphics cards. The cards will be manufactured on the TSMC N6 process instead of Intel's 7 node due to limited capacity however he did confirm that future cards could be manufactured directly by Intel. Raja also confirmed that Intel was currently offering reference boards to their partners to develop custom Arc Alchmeist cards. This reference board is likely the same one we saw in early leaks from Moore's Law is Dead and the design featured by Intel in their promotional videos. The board partners may use the same cooler design in their cards or create semi-custom solutions.
This is about the same principle offered by AMD and NVIDIA in my opinion.