Aperture updated to 2.1, now with image processing plugins

Apple has just released version 2.1 of its photo pro app, Aperture, which now includes some image processing plugins, along with a number of other fixes. The 2.0 release of Aperture brought image processing plugins support (version 1.x supported only export plugins), but none was available, and third parties didn't have any specs or details on how tu use the APIs.
Well, this has changed and here's what you will get in this 49.7MB update, available from OSX's Softwre update or directly from Apple's Aperture download page:

Aperture 2.1 updates various features of the application and addresses issues related to performance and overall stability. The updates include the following:
Dodge & Burn plug-in
A sample plug-in is preinstalled, taking advantage of the Edit API introduced in Aperture 2.0. The plug-in adds brush-based tools for Dodge (Lighten), Burn (Darken), Contrast, Saturation, Sharpen, and Blur.
Customizing the default adjustment set
You can now specify which adjustments appear by default in the Adjustments inspector or the Adjustments pane of the Inspector HUD. 
Updated Crop tool
A simplified user interface makes it easier to preserve an image’s original aspect ratio, match the aspect ratio of your display, or use one of the standard preset aspect ratios.
Sorting in All Projects view
A shortcut menu allows you to sort projects in All Projects view in ascending or descending date order. 
Show on Map
A shortcut menu allows you to choose the Show on Map command by right-clicking (or Control-clicking) an image that contains GPS data.
Access to the toolbar on a second display
When using multiple displays in Full Screen view, the Full Screen view toolbar is now accessible on a second display.
Snapshots book theme
This additional theme includes new “photo border” frames in which to place images.
Flipping images
You can now flip images horizontally or vertically within Aperture.
Vignette
The range of gamma and exposure settings available has been expanded.
Saving books as JPEG or TIFF images
Automator actions have been added to the Save as PDF pop-up menu in the Print Book window to automatically generate JPEG or TIFF images from book pages.
Update EXIF From Master
This command allows Aperture to reread EXIF information from master images after they have been imported.
Extended AppleScript support
The “Reveal” verb in the AppleScript dictionary has been extended to include containers such as projects and albums.
The update includes fixes that impact a number of areas, including:
• Image import
• Image migration
• Erasing memory cards after import
• Quick Preview
• Batch Change
• Auto-stacking
• All Projects view
• Tooltips
• Smart Albums
• Tethering
• Adjustments inspector
• Viewer
• Loupe
• White Balance
• Definition
• Lift & Stamp 
• Handling of externally edited images
• Reconnecting referenced files
• Keyboard customization
• Deleting images
• Metadata presets
• Book themes
• Borderless printing
• Webpage/web journal export
• Exporting versions
• Export plug-in support
• AppleScript support

Aperture 2.1 is recommended for all Aperture 2 users.