while Intel and Micron have ended their co-development/manufacturing efforts, both Intel and Micron retains rights to the NAND and 3DXpoint IP they developed together.
Intel has a fab in China that produces it's NAND memory and Intel has a contract with Micron for 3Dxpoint chips from the formerly joint owned fab in Lehi which Micron exercised it's option to by back in 2019. Intel currently is doing it's next gen 3Dxpoint and NAND development work at a factory in New Mexico.
Intel recently said they plan to sell their NAND group to Hynix in a convoluted deal that will complete in 5 years.
A few weeks back Intel held a memory and storage event where they went over their plans for 3DXpoint based persistent memory.
getting back to nelonline's question, yes the Ice Lake platform does support 3DXpoint for persistent memory and that memory is made at Micron's Lehi fab.
