http://www.pcgamer.com/intels-beastly-core-i9-7920x-processor-is-now-available-to-preorder/

On the off chance that you have been waiting for this very moment, several online retailers are now accepting preorders for Intel's Core i9-7920X.

Interestingly, Newegg does not list the Skylake-X part as a preorder, so perhaps it has inventory ready to go. Others such as B&H Photo have their listings clearly labeled as preorders, with Amazon posting its boilerplate "2 to 4 weeks" shipping quote. Make of all that what you will.