Selected features introduced: (i) the Unsharp Mask command; (ii) the Dust & Scratches command; (iii) the From Saved option in the Rubber Stamp tool; (iv) the Dodge/Burn/Sponge tool.
Procedures: (i) when an image is reduced in size, scanned or rotated it could appear "soft"; use Sharpen > Unsharp Mask from the filter menu; (ii) use Hue/Saturation or the Sponge tool to make colors more intense; (iii) lighten and darken areas of an image with the Levels command (more sophisticated than the Brightness/Contrast command).