RUBAIYAT  Just starting to have a look at this, so not a comprehensive review.

First impressions:

1. Seems to have a very large selection of features. Some appear pointed to professional usage.

2. GUI is crude. Windows, particularly dialogues, resize oddly. Buttons and fields scatter when the dialogue box is resized. Functions are not clearly grouped, not helped by the bad icons.

3. Interface icons are cheap wishy washy PC style, don't do their job and are generally indecipherable.

4. Feedback on some actions is either non existent or hard to discern.

5. Palettes are disorganised and can't be docked.

6. Tends to use programmer's jargon naming interface objects

7. Has PC behavior eg It opened the .app twice in my attempts to open sample files and closing all windows closes the application.

8. The Wiki has dead links.

9. The downloadable sample doesn't open in Scribus and there is no dialog saying why.

10 I'd rate this a stable beta.

In all it is a mix of considerable promise, in desperate need of a good UI designer.

Be interesting where they go from here. It seems to be making very little progress at this stage. Nothing since February.  
(Version 1.3.5v180209)

PETER DA SILVA  I can't move the main window... it's stuck in the upper left corner of the screen. Clicking the "greyed out" maximize icon in the window reveals that this is actually a full-screen Windows style MDI application with a fake OS X window hidden inside the real main window... and the main window has no title bar.

They would actually have done better to make it a plain X11 port. This is so bad a design that I see no reason to bother investigating it further.  
(Version 1.3.5)

BMURRAY  This version and the current stable (1.3.3.10) are basically unusable on an Intel Mac for projects in excess of about four pages. 1.3.5 is anticipated in May and will have a native Intel build which may or may not be usable -- we'll see.  
(Version 1.3.3.9)

MACROXX  Unfortunately the PPC version is very slow on my intel mac. Hopefully a universal binary or intel version will be available soon...  
(Version 1.3.3.9)

JIMW  Suggestion to old Ragtime Solo users:

Since Ragtime has discontinued Ragtime Solo, it might be wise to convert your files to this product, before Solo becomes incompatible with the newer Mac OS's.

This is a definite possibility since it is my understanding that Solo no longer supported.

Unless this product includes a converter, copy and past should do it after creating the appropriate layouts.   
(Version 1.3.3.8)

SAXPHILE  The Aqua port's page is http://www.scribus.net/index.php?name=Sections&req=viewarticle&artid=3&page=1  
(Version 1.3.3.2)