Features

• Internal coordinate space is now metric. This should fix the "trace nubs on metric grids" issue. Also, units are allowed on pretty much every "coordinate" that PCB accepts. Example: 5.4in, 10cm, 0.55mm. New configure option --enable-coord64 to force (slower?) 64-bit type for coordinates on 32-bit systems (if you need a board bigger than 1 meter across). The internal precision is 1 nanometer, the internal type is "Coord".
• MinGW support.
• New GL mode for the gtk hid with translucent traces.
• New GTK layer view/choose widget and other GUI enhancements.
• GTK HID warns if the *.pcb file has changed on disk.
• Enhanced grid snapping logic.
• Select/report nets by name.
• Auto-pan has been removed.
• Zoom can zoom out beyond the edge of the board's workspace.
• GTK: title string matches GNOME conventions.
• Personally identifiable information is no longer stored in the PCB.
• Toggling vias from hole to plated is reversible.
• Gerber exporter has options for including outlines on other layers.
• Edited footprint files are saved as footprints, not pcbs.
• Improved gtk library search/filter.
• Default layer stack is now a six-layer template with outline.
• If the board has an outline layer, an outline will be shown if no other outline is specified.
• Group[] string allows t/b synonyms for c/s. "top" and "bottom" are the standard names now.
• PCB will save files with an older version tag if newer features aren't needed.
• Autorouter has a progress dialog.
• PCB will no longer let you delete the last top/bottom layer.
• Refcard has been updated.
• Documentation updates.
• Layes with the PCB::skip-drc attribute set are ignored during DRC.
• Allow numeric keys to also choose the silk layer.
• Minor readability tweaks to the default font.
• Via copper may overlap.
• User is notified if an Import() cannot find all the footprints.

Bug Fixes

• Optimizer won't try to optimize overlapping pads
• Undo should fail less, in corner cases.
• Nested key-bound actions won't crash lesstif.
• Do not select invisible pads on the far side.
• Protect Import() from command injection.
• Fix conversion of far-side polygons to element pads.
• Fix initial clearance values of text when loading PCBs.
• Fix solder mask drawing on vias.
• Add missing action documentation.
• Fab drawing notes actual outline trace width.
• Zero clearance pins and pads won't cause DRC failures.
• PS export: fix draw-rectangle (used to do fill, not outline)
• Gerber export no longer fills unfilled rectanges.
• If there are no image formats available, the PNG hid is not enabled.
• You can no longer select pins/pads of locked elements.
• The m4-to-newlib converter now creates file names that match the library view.
• Never set the FOUND flag on new silk lines.
• Lesstif HID won't crash if both Xinerama and XRender are detected.
• Lesstif menu is now internationalizable.
• Refdes labels in a font-less layout can be moved.
• Import can correctly update elements on the bottom side.
• DRC no longer treats unplated holes as conducting.