Back in January we reported on a new partnership between Insomniac Games and GameStop - the latter would actually publish the former's Song of the Deep. Industry watchers and GameStop itself both passed off the move as an experimental one, not signifying a deeper publishing play for the retailer. Clearly, things have changed since then, as now GameStop is establishing a new publishing vertical for the company, called GameTrust. In addition to Insomniac, GameTrust has already signed Ready at Dawn (The Order: 1886), Frozenbyte (Trine), and Tequila Works (Rime). Moreover, GameStop's Mark Stanley, Vice President, Internal Development & Diversification, told GamesIndustry.biz that GameTrust has been in conversation with another 18-20 developers.