Pagestream is the Desk Top Publishing program of choice on the Amiga. Offering professional level DTP tools to create page layout for any type of printed design from business cards and newsletters, to books, magazines and more.
Version 5 of Pagestream is currently in development and will be released for classic 68K Amigas running AmigaOS 3 or newer, PPC Amigas running AmigaOS4, and PPC machines running MorphOS. The new version adds a lot of new features and abilities to bring it in line with features now present in current industry leading DTP packages from Adobe and Quark.
You can find out more at the official site http://www.pagestream.org/
Beta Demos are not currently available for Amiga versions, but they are for Windows and Linux.