http://wccftech.com/intel-arbitrarily-breaks-coffee-lake-compatibility-z270-force-users-buy-new-z370-motherboards/

Intel officially revealed its brand new lineup of 8th generation Coffee Lake processors yesterday.Coffee Lake marks the debut of Intel’s first ever six core mainstream core i7 and core i5 parts as well as its first ever quad core i3 parts.

The new family of chips introduce higher cores counts and higher clock speeds in every product tier. With that being said, it’s not all good news. Kaby Lake owners looking to upgrade to Coffee Lake will have to buy new motherboards as Intel has decided to break compatibility with existing 200 series chipset motherboards supported by Kaby Lake.