I. Feature Updates

1. Treeland

• Treeland stability has been significantly improved, with over 20 stability fixes, focusing on abnormal behaviors during login, logout, multitasking view, window management, focus switching, and more;
• Continuous rolling integration of new Treeland versions further improves window management, taskbar coordination, and desktop session stability;
• Key adaptations between Treeland and DDE core capabilities have been completed, including input devices, display settings, personalization, power management, and other common desktop features, meeting daily desktop usage needs;
• Multi-screen setup capabilities enhanced, supporting cloning, extending, different resolutions per screen, and different scaling per screen;
• Dynamic wallpapers, scheduled standby, suspend, display turn-off, and other features now work properly.

2. File Management and Search

• Added file indexing configuration – users can enable, disable, and update indexing in the file manager's advanced settings; enabling improves filename search response speed, while disabling reduces background resource usage;
• Added image content search (requires manual enabling of image text content search indexing in file manager settings), allowing users to search local images by text content within them – useful for screenshots, scanned documents, photos, posters, etc.;
• File Manager and Global Search now display text match snippets from images and highlight keywords, making search results more intuitive;
• Global Search enhances document content retrieval, supporting file recall through document body content, reducing reliance on exact filenames;
• File Manager, Global Search, indexing service, and document parsing pipeline have been updated to improve search recall, result presentation, and indexing stability;
• Optimized Samba sharing, mount/unmount path security, USB drive and external storage capabilities, improving file access and peripheral storage stability.

3. DDE

• Taskbar icon split mode now displays icons per window – for example, WeChat's main window, mini-program window, and file window each show distinct icons, making window identification clearer in multi-window scenarios;
• Display settings now support cross-screen splicing mode, combining multiple physical monitors into one continuous logical display area, with horizontal, vertical, matrix, and other arrangements – suitable for large-screen presentations, command dispatch, data dashboards, and other multi-screen scenarios;
• Update settings now include intelligent mirror source selection – the system can automatically match a mirror source, or users can manually switch after speed testing;
• Optimized interaction experience for launcher, taskbar, touchscreen operations, tray pop-ups, window focus, and window switching;
• Improved consistency and stability in daily desktop operations for Notification Center, Control Center, network modules, update lists, launcher, and tray components;
• Optimized network detection and switching logic in multi-NIC scenarios, reducing frequent toggling or detection anomalies.

4. Kernel and Security

• Updated community 6.6 and 6.18 kernel branches, covering AMD64, ARM64, and Loong64 architectures;
• Fixed issues related to system updates, mirror source configuration, temporary file handling, and environment variable passing;
• Fixed automatic rollback after reboot for some models during control center upgrades, improving upgrade reliability;
• Updated Qt6, initramfs, ALSA, PipeWire, libvirt, os-config, deepin-debug-config, and other base components, enhancing boot, audio, virtualization, debugging, and system configuration capabilities;
• Synchronized updates to OpenSSL, OpenSSH, curl, poppler, xorg-server, xwayland, ffmpeg, and other base components, incorporating multiple CVE security fixes to improve system stability, security, and long-term maintainability.

5. Common Applications and Tools

• Terminal: optimized command execution and theme application experience;
• Archive Manager: optimized archive processing, password dialogs, and long filename extraction scenarios;
• Mail: optimized account data migration, reducing re-login risks after upgrades;
• Image Viewer, Album, Music, Movie, and other multimedia applications fixed multiple display, interaction, and stability issues;
• Camera, Font Manager, and other applications updated to improve multimedia capture, font management, and daily tool experience;
• Document Viewer now supports using arrow keys (up/down) to scroll line by line, enhancing keyboard-based reading;
• Input Method Configuration, Voice Notepad, Log Viewer, System Monitor, and other components updated.

II. Bug Fixes

1. Treeland

• Fixed a Treeland crash when logging out while Text Editor has unsaved content;
• Fixed a system crash after reboot into the desktop;
• Fixed a freeze when closing window thumbnails in multitasking view;
• Fixed the issue where pressing Esc could not abort window resizing;
• Fixed the occasional disappearance of desktop and taskbar after quickly entering password to enter desktop;
• Fixed a problem in launcher full-screen mode where typed characters were not entered into the search box;
• Fixed issues with file dragging, tray dragging, window focus, Alt+Tab switching, quick launch animation, and window right-click menu offset.

2. DDE and Desktop Interaction

• Fixed taskbar icon display, tray pop-up position, touchscreen long-press, and touchscreen unresponsiveness issues;
• Fixed launcher touch scrolling, continuous long-press menu pop-up, touch operations on app icon area, abnormal color in uninstall dialog with incomplete confirm/cancel buttons, abnormal prompt when touching sort button under Treeland, overlapping list items after dragging under Treeland, and abnormal selection state after long-pressing multiple apps;
• Fixed the issue where Dock theme did not follow system dark/light mode under Treeland;
• Fixed display and interaction issues such as window control button hover states and tray panel click unresponsiveness;
• Fixed a crash in Dock task manager when closing windows;
• Fixed abnormal hover state on notification close button edge area, improving notification closing stability;
• Fixed alignment issues between release date and expand button in update list;
• Fixed control center username edit box layout, focus border, and some icon dependency issues;
• Fixed network detection failures and frequent network status toggling in multi-NIC scenarios.

3. File Management and Search

• Fixed various abnormal issues in File Manager, Global Search, file indexing, document parsing, and related pipelines;
• Optimized file search result display, content snippets, and index update experience;
• Fixed occasional crashes in Samba sharing scenarios;
• Fixed security issues related to mount/unmount paths, improving external storage and file access security.

4. Common Applications

• Fixed ZIP appending, split ZIP recognition, encrypted filename display, and long filename extraction in Archive Manager;
• Fixed an issue in Mail where account encrypted data could not be decrypted due to machine ID changes;
• Fixed issues in Album such as incomplete delete dialog display under large fonts, overlapping progress bar and import button, and corrupted video covers in year view;
• Fixed Music application crashes, unresponsive tray clicks, missing window button hover states, and abnormal playlist name display;
• Fixed Movie full-screen time display, HiDPI standby icon positioning, and ARM platform rendering issues;
• Fixed Movie progress bar range synchronization and crashes when playback duration is zero;
• Fixed abnormal cursor display in Image Viewer's live text area;
• Improved stability and compatibility of Camera, Font Manager, and other common applications.