The Browser Company is not developing new features for the Arc browser as it focuses on its new AI-centric Dia browser.
Arc faced challenges due to being too different and difficult to learn, leading to the development of Dia to hide complexity behind familiar interfaces.
There are mixed reactions regarding the transition from Arc to Dia, with suggestions to keep Arc going under a different management approach.
The new Dia browser is optimized for cross-platform code sharing, with a focus on performance and platform-specific technologies like AppKit on Mac.