Rendering Engine:
• Layers can use OpenGL blend modes (add / over) instead of CoreImage (extremely fast)
• Support for custom QC composition / transitions patches (place in qcCompModes folder).
• Improved size and position controls including fit, fill, and stretch auto-sizing options. Size and position controls can now be safely sync'd to data sources.
• Preview windows are vastly more efficient.
• New Outputs section of preferences for setting the canvas size, default screen and other main output options.

Still Images:
• Images are no longer handled as single frame movies
• Choose between displaying full image using built-in player, or passing off the image to custom Quartz Composer image source patches (this allows pan & scan, texture mapping, and other effects using a hi-res source image while still processing at a reasonable layer size).

Flash / Web Source:
• New source type lets you display web pages and SWF files on layers.
• Can work with both local files and remote URLs (loading remote files requires an Internet or other network connection).
• Local SWF, html, and webarchive documents can be loaded directly into a media bin like any other file.
• Links to remote URLs can be added to media bins by right+click or dragging the fav-icon from the URL bar (in the layer controls or Safari) to a media bin.
• Use preview in layer controls to enter text, click hyperlinks, and other web page controls (limited interaction with some interactive elements like SWF, Processing, Quicktime, etc).

Layer FX:
• Added a search box for filtering the list of FX.
• Quartz Composer FX can now have custom categories (add a "category" string in the Edit Information window). The standard Apple Distortion, Utility and Stylize categories are also still supported.
• Each layer now has its own local presets for FX chains (a row of buttons along the top same deal as local presets in the step sequencer).
• Included new Delay and RGB Delay FX.

- adjusted splines so it's easier to make them hit 0 at the left edge
- fixed bug with the audio analysis which was causing sporadic crashes in some situations
- fixed bug where restoring a preset that would un-synch a button would sometimes cause unexpected behavior

two small bug fixes from 6.2.5 and an addition to the Sample Interfaces project.

Version 5.0pb625:
fixed missing class in bug reporter by adding it to vdmx project
fixed crash when attempting to load missing qcfx
fixed bug where step sequencer wasnt triggering the same value twice in a row
added some presets to the sample interfaces project :: fixed VVColorControls fx
reactivated the perspective transform FX
fixed channel slide effect
on preset restore, sliders synched to an infreq DS will check to see if the DS has received any data, and if not will restore to the stored value in the snap
worked around an xcode bug with the LC
prevents user from pasting crash logs in bug reporter
fixed tiger-only crash due to using an undeclared method in the tap stub
fixed total lock-up when using frequency table to set analysis bands below 80 hz
fixed minor bug with qc3 fx input image protocol naming convention
filepaths sorted on file load by drag and drop from finder

Version 5.0pb624 fixes a Tiger specific bug that snuck into 6.2.3 and a couple minor changes

• dial in clock window and value indicator in its title bar update smoothly when synched to a midi clock
• fixed bug with page tab snapsnhots introduced in 6.2.1
• worked around coreimage bug that wasnt clearing CIImageAccumulators
• fixed bug where rectangle UI element wasnt sending the properly formatted values
• fixed preset manager bug that wasnt properly opening the last opened project in situations where you were running a new version and had previously selected open
• notes to value plugin now works with OSC
• fixed QCSource crash on vvqcfile delete while playing
• media inspector movie preview now reflects audio settings for the previewed clip
• added mute preview option to media inspector movie preview
• fixed bug where live inputs were incorrectly populating the list of destination pages