The most important change this version implements is the addition of 3 new saturation modes that extend the sound coloration palette you can use to process your tracks.

Other changes version 2.6 implements:
Plugin's popup-windows now recover last position after reopening.
Mouse backward and forward buttons can be used for filter type and parameter value selection.
The "Alt" key can now be used to adjust knob parameters synchronously in several channel groups.
The "Min Infrastructure" user interface display mode added.
The "Flat Level Meters" level meter display mode added.
The "Show All Filter Shapes" global switch added.
Version change history information window added.
The "Do Not Show Latency Changes" global switch added.

Version 2.5 update implements the following changes:

* The "Show All Channel Meters" routing switch added.
* Additional visual look variation settings added.
* Knobs in the compressor mode editor can now be linked with the Ctrl key.
* Smooth filter automation implemented.
* "Filled Spectrum" spectrum display mode switch added.
* Oversampling filter type "Min-phase/Lin-phase" switch added.
* Global "Auto Oversampling Level" 1X (off) option added.
* Control surface crosshair option added (can be switched off in the global options).
* De-esser pre-post compressor position switch added.

* "Ctrl+Drag" narrow band sweeping implemented.
* DC filter parameters are now specified for all channel groups to avoid phasing problems.
* Smoothed spectrum display implemented.
* Secondary spectrum display implemented.
* Spectrum's block size does not affect vertical spectrum's position now.
* The "No Multi-Channel Operation" global switch was added that fixes incompatibility with some non-VST2.3 compliant VST hosts.

* The "RT Max" spectrum analysis option added.
* Spectrum's precision does not depend on the oversampling level now.
* Side-chain routing presets now appear dimmed to reduce confusion.
* Parameter automation on AU Mac OS X now shows real parameter values.
* Preset "update" function implemented in the preset manager.
* Selected filter's curve is now always shown, not only when hovered.
* Control points can now be double-clicked to disable/enable the filter.
* The "VST Function Sync" global switch was added that fixes crashes in some hosts (i.e. Tracktion).
* Control surface readout now displays musical note.
* "Density mode" implemented in level meters.

* Plug-in initial loading time reduced.
* Inability to enter negative filter gain values fixed.
* Gate band muting implemented.

* Switchable DC filter added.
* Compressor smoothing parameter added.
* Mouse jumping movements issue fixed.

* Smoother compression sound
* De-breath gate algorithm
* Multi-channel support
* Multi-platform support
* Wet/dry mix
* Mid/side processing
* Processing mode editors
* Selectable oversampling level
* Undo/redo
* Routing matrix
* Preset manager
* User interface coloration
* User interface re-scaling
* Channel grouping
* Plug-in instance naming
* Bypass switch