Interestingly, the chip may be released as early as one week from now. Be prepared to pay a pretty penny though:
The first Core i9 "Whiskey Lake" SKU is the i9-9900K, an 8-core/16-thread chip clocked between 3.60~5.00 GHz, armed with 16 MB of L3 cache. The introduction of the Core i9 extension to the mainstream desktop segment could mean Intel is carving out a new price point for this platform that could be above the $300-350 price traditionally held by top Core i7 "K" SKUs from the previous generations. In related news, we are also hearing that the i9-9900K could be launched as early as 1st August, 2018.