Base posted that Cobalt will launch in September, with key features including Sponsorship, Batch Calls, and Session Keys. Sponsorship allows apps to sponsor transaction fees for users, enabling free Gas; Batch Calls support bundling multiple transactions into one, reducing operational steps; and Session Keys allow users to authorize apps to sign transactions within a specific scope, minimizing repeated authorizations. https://(wublock123.com)/news/base-cobalt-launching-september-64962