You can ask nicely for a Press release and if you are lucky you get it. Those versions are fullversions but usually you can*t upgrade to the following version - they use special serialnumbers for these versions (Macromedia does and Eon does it too). At least over here and ehhh, you have to write a little article or review about the software and send them the magazine that has printed it. So maybe it's not really for free.

Every organisation rests upon a mountain of secrets ~ Julian Assange