We just launched the public Preview 1 of Autodesk Impression (code named Vespa). For people located in England, United States, Canada, Ireland, New Zealand, and Australia they can download Autodesk Impression preview now. Spread the word and go kick the tires.

http://labs.autodesk.com

Autodesk Impression works with DWG files, DWF files, output from other products and makes them look phenomenal. Revision to the design take only minutes to update the Vespa output instead starting over with markers or post editing of a postscript file in a photo editor. Take what used to be a several hour or many day process into about 20 minutes. You can assign styles to layers or blocks, convert hatches to styles, have a block insert replaced by another block randomly scaled and rotated to prevent that same tree copied look. It is just plain fun and effective.

Cheers,
Shaan