JetBrains放弃Fleet：急刹变道打造全新Agentic IDE，与VS Code、Cursor争夺下一代AI编程王座

Core Viewpoint - JetBrains has decided to discontinue the development of its IDE Fleet, which has been in public preview since its launch in 2021, and will focus on a new development environment called Air aimed at agentic development [2][6]. Group 1: JetBrains and Fleet - JetBrains has a comprehensive suite of IDE products primarily based on the IntelliJ core platform, which has been in use since 2001 [4]. - Fleet was intended to be a lightweight, collaborative IDE to compete with Microsoft's Visual Studio Code (VS Code), which has gained popularity for its features [4][5]. - Despite some initial interest, most developers remained loyal to the IntelliJ series due to its robust plugin ecosystem and Fleet's prolonged public testing status [5]. Group 2: Discontinuation of Fleet - JetBrains announced that Fleet will no longer be available for download starting December 22, 2025, as maintaining two IDE product lines was causing user confusion and internal resource dilution [6]. - The company acknowledged that it failed to replace IntelliJ IDEA with Fleet or narrow its focus to a clear, differentiated niche [6]. - Although Fleet is being discontinued, its components will be integrated into other JetBrains IDEs, and the new product Air is an evolution of the Fleet platform [6]. Group 3: Introduction of Air - Air is designed to focus on a new workflow that leverages AI capabilities, allowing developers to delegate significant tasks to agents, which contrasts with traditional IDE workflows [7][8]. - The agentic workflow involves structured task definitions and asynchronous execution, which necessitates a different tool experience than traditional IDEs [8]. - Air is currently in public testing and will support multiple operating systems and cloud execution, enhancing its functionality beyond what Fleet offered [8]. Group 4: Developer Reactions and Market Position - Some developers expressed disappointment over the discontinuation of Fleet, believing it had the potential to compete effectively with VS Code and other emerging tools [10]. - The shift from Fleet to Air reflects a recurring pattern in JetBrains' strategy to adapt to evolving software development paradigms, particularly in the AI programming tool space [11]. - There are concerns about the necessity of creating a new tool rather than enhancing existing IDEs with AI features, raising questions about developer migration to Air [11].