Now that Tales of Tamar is shipping, a new demo version is available on Aminet:
(Note that this is labeled a "tech demo": you can't actually play
the game, as that would require access to their server, and you'll have to pay to get that access).
The full version of ToT will be uploaded to Aminet later on. They want to support Amiga Magazines, that's why these get the free version a few months earlier than Aminet.