12th gen is rumored to be on a new rectangular socket LGA 1700, so prior gen cpus would be physically incompatible if those leaked pictures are true. Dell would need to release a bios update to support 11th gen cpus on the OEM z490 board in order to support the next 11th gen cpus.  You'll have to wait and see.  Prospects of a biis release on Dells website look very promising for current R10 Ryzen owners with 3000 chips looking to upgrade to 5000 chips as an aside (since they just rolled 5000 out on the R10).
Dear Community users,   I am an Alienware Aurora R11 user with (i7-10700KF/3080/32GB RAM). By the last CES I heard Intel would release it's new CPU, also called as Rocket Lake with its codename, will be published in Q1 2021. I've also heard that 11th Gens are compatible with 400-Series Boards even tho they recommend using the new 500-Series Motherboards.   So my question is this. The R11 uses a 400-Series Board, since it uses 10th Gen Comet Lake. Will I be able to upgrade the CPU to Rocket Lake from Comet Lake?    + additional Question : I've also heard that 12th Gen Alder Lake with 10nm refinery would be published in 2021. If I would change the motherboard to Alienware's board designated for Alder Lake, will I be able to upgrade to Alder Lake while maintaining the Alienware system?   Thank you for you answers.
Aurora R11, upgrable to Rocket Lake?