These are the same type of shirts as last year, but feature an updated design, influenced by the official Hacktoberfest event. For every sale, half the proceeds go to supporting QMK, and the other half to cKeys. The sale of these shirts is totally unaffiliated with the official Hacktoberfest event, and the final design is subject to change. Sales will continue through October 31st, 2020. These are expected to ship mid-November 2020.