Ableton Live 8.0.4 is live. Here’s the info:

New Features

• Updated manual
• Improved handling of the library database. Requires a full rescan of the library which can take a while.
• Better GUI performance when recording many automation parameters
• The APC40 script remembers the last set bank for each device and restores that setting when the corresponding device is selecting again.
• On Mac OS X, if the custom dialog of a plug-in would not process incoming keys Live will handle them. Depending on the plug-in, this should provide a similar work flow as in Live 7
• Several improvements for the Share functionality
• On Windows, support for up to 256 audio channels when using ASIO

Bugfixes

• Unquantized scrubbing would not work properly in MIDI clips
• On Mac OS X, the DUY Tape AU plug-in would crash on instantiation [5429]
• When the Looper is set to a fixed length recording and the song is running, the recording length of the Looper might be miscalculated
• Under certain conditions, moving a MIDI clip in arrangement could crash Live [5543]
• Protocol recording of audio clips in ReWire slave mode would lead to silent arranger clips [5541]
• Dragging a multi selection of audio files into Live would not work properly, when the multi selection would contain .asd files too [5485]
• The ‘Select All’ context menu command would be available by accident for an entry in the device browser [5496]
• On Windows, moving Library could transform .AbletonPresetInfo files into _AbletonPresetInfo files [5506]
• Quantized scrubbing would not work properly in the Arranger [5490]
• Setting a tempo via scene launch would not work properly if there’s a loop in the Arranger [5535]
• Exporting or consolidating audio would create a fade in in the resulting audio file [5540]
• After Grouping, ungrouping or re-grouping of tracks, the APC40 would not work properly anymore
• Doing undo via keyboard shortcut while a modal dialog is opened could crash Live [5561]
• With the APC40, stopping clips via the clip-stop buttons would not work properly
• Switching device banks would not work properly when using the ‘microKontrol’ as Control Surface [5568]
• On Mac OS X, having a plug-in opening a modal dialog and switching then to another application would crash Live [5583]
• MIDI loop recording in Arranger would not work properly after the first loop iteration [5203]
• Using follow actions on clips in Legato mode could crash Live [5580]
• On Windows, editing the info text for an arrangement locator would not work properly [5574]
• On Mac OS X, slow mouse wheel changes would not work properly [5552]
• On Mac OS X, drag’n drop operation with certain key modifiers could lead to an ‘unstoppable’ drag’n drop operation [5564]
• Restoring from the undo history after a crash could lead to another crash
• In several surface controller scripts, the arm buttons would not select tracks anymore [5594]

via Ableton Live Forums