Core Viewpoint - The latest version 4.1.8.21 of WeChat for Windows and macOS has been released, featuring a redesigned user interface that enhances the overall user experience [1][3]. Group 1: Version Update Details - Version 4.1.8.21 is an open beta version that does not require internal testing permissions, allowing all users to install and use it [3]. - The most notable change in this version is the complete redesign of the user interface, including elements such as frosted glass backgrounds, new icons, and updated color schemes [3]. Group 2: UI Changes - In the Windows version, the layout of the chat window has been altered, with functional buttons moved from above the input box to the bottom, and the selected chat object color changed from gray to dark green [6]. - The macOS version also features a redesigned user interface, although specific details about the changes were not provided in the current update [7][8]. Group 3: Future Insights - Further detailed analysis of the new version's highlights is expected to be published later, indicating ongoing testing and exploration of the new features [9].