Reason 6.5 was launched last week. Reason users can now use external plug-ins with the introduction of the Rack Extentions format. FXpansion has released the filter effect Etch Red, see the video below:
Etch Red differs from the VST plug-in. This is partly due to the limited graphical capabilities of the Rack Extention format.
The update to Reason 6.5 is free for Reason 6 users. Temporarily they also get the Rack Extentions Pulsar and Saturation for free.