Core Viewpoint - JetBrains has decided to discontinue its Fleet IDE, which has been in public preview since its launch in 2021, and will focus on a new intelligent development environment called Air, indicating a shift in strategy to adapt to market trends and developer needs [3][4][8]. Group 1: Fleet IDE Discontinuation - Fleet IDE was intended to be a lightweight, collaborative tool that could adapt to remote projects, developed in response to the competitive pressure from Microsoft’s Visual Studio Code [3]. - Despite some initial interest, the majority of developers preferred the established IntelliJ tools due to its robust plugin ecosystem and the uncertainty surrounding Fleet's prolonged preview status [4]. - JetBrains announced that Fleet will no longer be available for download after December 22, 2025, citing confusion among users and a diversion of company resources as reasons for this decision [4][5]. Group 2: Transition to Air - The new tool, Air, is built on the Fleet platform and aims to introduce a novel workflow where developers guide an intelligent assistant to generate code, which they then review [5][8]. - Air is currently in public preview and requires a subscription to Anthropic services for access, with plans to support additional operating systems and features in the future [7]. - The decision to pivot to Air reflects JetBrains' ongoing strategy to keep pace with the evolving landscape of AI development tools, similar to offerings from AWS, Google, and Microsoft [8]. Group 3: Developer Reactions - Some developers expressed disappointment over the discontinuation of Fleet, feeling that it had the potential to compete effectively with VS Code [8]. - There are concerns among developers that instead of creating new tools, JetBrains should integrate intelligent features into its existing, mature IDEs, which are already well-regarded [9].