• Filter › Sharpen: an unsharp mask with Amount and Radius, also as an adjustment layer.
• Align and Distribute layers, from the Align button in the Move tool's bar or the Layer menu.
• Crop to any ratio with Custom…, plus a 2.39:1 widescreen preset; the ratios are grouped by shape, and Original is now Canvas.
• Tidier tool bars: flip buttons as icons, and number fields sized to fit.