they fixed copying & quicklook of clippings too
new audio/midi settings
telling what app is avoiding a unmount (?)
Browse- & Scrollable Stacks
slightly improved preview
Cleaned up & manageable services and keyboard shortcuts
Correctly detects 1080p TVs, tv resolution choosable
spelling correction options(?)
automatic download of printer-drivers
Quicklook opens even when no items are selected
LCD font smoothing option
Application filesizes (compare them with leopard)
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quicktime decodes x264 in a external process (264decoForkedSc) - no gpu encoding on a x1600 yet (i doubt but hope that apple will support those old GPUs for decoding)
finder has a small animation when switching to the "easy" finder