New Intel motherboards are appearing everywhere online at the moment. The new chipsets are H370, B360 and H310. I also noticed some references to Z390 motherboards in manuals from Biostar, but so far nothing has been officially released with a Z390 chipset, but it's probably coming (pretty) soon. I've added the 2 Biostar boards anyway.
I'm currently in the proces of adding all new motherboards, but there are many new boards and I'm just a single person (if you want to help, feel free to shoot me a message using the contact form) so it'll take a couple of days before everything is added.
Thanks and have a nice day :)