Looks like Intel does not really want to sever all ties with Apple, even after denigrating the new M1-powered Macs in its quite aggressive ad campaign released last week. With the introduction of its IDM 2.0 strategic plan that includes a Foundry Service program for fabless companies in the U.S. and Europe, Intel hopes to regain Apple's trust by offering to produce future ARM-based M processors. It remains to be seen how Intel is going to match TSMC's 3 nm and 2 nm nodes.
https://www.notebookcheck.net/No-bridges-burned-Intel-wants-to-produce-Apple-s-future-ARM-based-processors-after-releasing-anti-Mac-ad-campaign.529141.0.html