Zed announced that Delta is now live on both web and mobile web. According to the post, the browser version is the same native Rust application compiled to WebAssembly, and users can start by opening a thread link or going to the Delta threads page.
Compiling the native app to WASM lets one Rust codebase serve desktop and browser clients, rather than maintaining a separate web implementation. The post does not describe feature parity with the native app, performance in the browser, or which model providers are supported on the web version.