xps13 Developer Edition (ubuntu) 32GB RAM available but not possible to checkout

it seems that xps13 9300 Developer Edition (Ubuntu) with 32GB has finally became available: https://www.dell.com/en-us/work/shop/dell-laptops-and-notebooks/new-xps-13-9300-developer-edition/spd/xps-13-9300-laptop/ctox13w10p1c2200u

However, after choosing 32GB config option a warning appears "The selection - Shipping Material is incompatible with Processor" and it's impossible to checkout it

Please please fix it, Dell