"Lock and Load", this is the extent of the information being provided by Gigabyte on the new G1 Killer motherboard.
All we can really tell from this page is that the G1 Killer series are designed for gamers with things like built in water cooling and onboard Creative audio. We can only assume that this will be released with support for the new Haswell processors that are expected to launch in June.
We'll keep you posted with more details as they surface.
Source: www.gigabyte.com, gigabytedaily.blogspot.nl