It supports both Intel's 6th and 7th generation processors. The i9 is Intel's top of the line processor, and it was released in 2017. Yes, LGA 1151 will be compatible with 8th generation processors, which includes the i9. So, if you're looking to upgrade to the i9, you'll need a motherboard with an LGA 1151 socket. Keep in mind that you'll also need a supporting CPU cooler and RAM. But, with those components, you'll be able to take advantage of the i9's great performance.