Theming support and more new customization options
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Better HiDPI (high resolution) screen support
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Native support for macOS with a signed and notarized .dmg file
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Coordinate origin in top left corner by default
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Canvas rotation and mirroring
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On-Canvas alignment of objects
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Split view and X-Ray modes
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PowerPencil for drawing editable, variable width strokes with a pressure sensitive graphics tablet
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New PNG export options
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Integrated centerline tracing for vectorizing line drawings
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Searchable Symbols dialog
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New Live Path Effect (LPE) selection dialog
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New Corners (Fillet/chamfer) LPE, (lossless) Boolean Operation LPE (experimental), Offset LPE and Measure Segments LPE (and more!)
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Path operations, deselection of a large number of paths as well as grouping/ungrouping are much faster now
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Much improved text line-height settings
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Variable fonts support (only if compiled with pango library version >= 1.41.1)
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Browser-compatible flowed text
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Extensions programming interface updated, with many new options - Note: this introduces breaking changes, some third-party extensions will have to be updated to work with Inkscape 1.0