The longstanding Supreme x Nike SB partnership will carry on in 2016 with the release of this, a tonal take on what appears to be the Nike SB Blazer Low GT. The shoe uses Supreme branding on the heel, insole, and tongue, and comes with a Supreme hangtag.
While this is the only colorway from this project to leak so far, it's likely there are others on the way–Supreme usually releases its Nike collaborations in sets rather than one-off colorways.
There is no release date information out there yet on this upcoming Supreme x Nike SB Blazer Low GT pair. Supreme stores should be back open by the end of August with a new season's worth of gear, so don't expect any news before then.