Since version 2.5, WPF Docking is deployed as nuget package.
Archived older versions:
Version: 2.0.4847 (4/9/2013)
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x86   
x64   
FIX: Pane docking guide not shown correctly.
Version: 2.0.4846 (4/8/2013)
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x86   
x64   
FIX: Document tab selection issue.
Version: 2.0.4767 (1/19/2013)
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x86   
x64   
FIX: LicenseConsole cannot find registry key under 64 bit OS
Version: 2.0.4603 (8/8/2012)
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x86   
x64   
ADD: New VS2010 and Expression Dark themes!
CHG: This is a breaking change version. Some classes (mainly under DevZest.Windows.Docking.Primitives namespace) are changed/added to make re-styling easier.
Version: 1.2.3884 (8/20/2010)
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x86   
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ADD: IsFloatingValueConverter, MapConverter, Mapping class and FallbackBehavior enum type.
FIX: Change TabContextMenu from style DataTrigger to value converter so that the context menu can be restyled.
Version: 1.2.3842 (7/9/2010)
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x86   
x64   
FIX: Calling DockItem.Show once with the Bottom dock position and a second time with the BottomAutoHide dock position leaves the DockItem with a Bottom dock position instead of the expected BottomAutoHide dock position.
Version: 1.2.3782 (5/10/2010)
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x86   
x64   
CHG: AutoHideWindow template change to bind to Background;
CHG: Documentation change: direct child of ContentPresenter removed from Known Issues.
FIX: TargetAtPoint get wrong result when virtual screen not started at (0, 0);
Version: 1.2.3778 (5/6/2010)
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x86   
x64   
FIX: DockControl is not loaded exception during drag and drop under .Net Framework 4.0.
FIX: Wrong floating window position when resolution is not 96DPI.
CHG: Samples VS2010 projects targeting .Net Framework 4.0.
ADD: Documentation known issues.
Version: 1.2.3757 (4/15/2010)
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x86   
x64   
NEW: .Net Framework 4.0 / VS2010 Support.
Version: 1.1.3742 (3/31/2010)
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x86   
x64   
FIX: DockControl.Load throws a NotSupportedException.
Version: 1.1.3730 (3/19/2010)
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x86   
x64   
FIX: DockItem.ShowAsSidePane not executed when DockItem is not attached to DockControl.
Version: 1.1.3664 (1/12/2010)
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x86   
x64   
FIX: DocumentTabPanel/ToolWindowTabPanel - tab text not updated when changed
Version: 1.1.3644 (12/23/2009)
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x86   
x64   
NEW: DockItem.FirstShowAction and DockItem.SecondShowAction property for better XAML support.
Version: 1.0.3643 (12/22/2009)
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x86   
x64   
CHG: Empty Document DockTree DataTemplate change - background binding to DockControl.Background instead of fixed color.
Version: 1.0.3641 (12/20/2009)
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x86   
x64   
FIX: Integrate with .Net Licensing 1.1.3641, LicenseConsole save license to Wow6432Node under x64 system.
Version: 1.0.3637 (12/16/2009)
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x86   
x64   
FIX: Expression Blend designer support
Version: 1.0.3626 (12/5/2009)
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x86   
x64   
FIX:
1. TitleConverter InvalidCastException.
2. Cancel dragging start if mouse button is released.
Version: 1.0.3609 (11/18/2009)
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x86   
x64   
FIX:
1. Ends dragging when mouse up event is not received.
2. "Cannot set Visibility or call Show or ShowDialog after window has closed." exception.
3. Closing nested DockPane results in incorrect DockTree presentation.
NEW: Separate installer for x86 and x64.
Version: 1.0.3586 (10/26/2009)
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x86   
x64   
NEW: Integrate with .Net Licensing 1.1.3586 so that a distributable license can be obtained for unsigned application.
Version: 1.0.3546 (9/16/2009)
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x86   
x64   
FIX: Native floating window displays black background when first shown as hidden.
FIX: Less restrictive drag and drop code to avoid re-entrance (NullReferenceException).
Version: 1.0.3525 (8/26/2009)
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x86   
x64   
FIX: Integrate with .Net Licensing 1.0.3525 to fix the stack overflow exception with distributable license.
Version: 1.0.3521 (8/22/2009)
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x86   
x64   
FIX: Floating preview and floating window not positioned correctly in a multiple monitor environment (virtual screen not starts with 0, 0).
Version: 1.0.3520 (8/21/2009)
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x86   
x64   
NEW: DocumentTab.ShowsIcon attached property.
Version: 1.0.3477 (7/9/2009)
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x86   
x64   
FIX: Focus problem of the only auto-hide window;
NEW: Closing document tab by middle mouse button;
Version: 1.0.3464 (6/26/2009)
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x86   
x64   
First Release