The comment was spotted by Techpowerup and was made by a bloke who goes by the handle Atom80 who has previously provided official Gigabyte announcements. 

When asked about whether Gigabyte will be providing a GTX 1080 option for their Aero 15X V8-CF1 notebook, Atom80 stated that there are no plans to upgrade the Aorus notebook family until the next-generation GPUs are available.

Since the mobile variants usually launch a few months after the desktop variants, this could mean that it is possible that we're looking at a summer launch for the desktop models.