[Em Beta] new Xdata, Xtags, Xcatalog 6/7 betas

[Chris Ryland]

All three products have updated beta releases, with new features and  
bug fixes:

<http://www.emsoftware.com/products/xdata/beta>
<http://www.emsoftware.com/products/xtags/quarkxpress/beta>
<http://www.emsoftware.com/products/xcatalog/beta>

These are now combined QuarkXPress 6 and 7 beta releases, and the  
QuarkXPress 4 XTensions are no longer shipped nor supported, so we've  
dropped them from the betas. (Our plan is to make final non-beta  
versions available for people who still need to use QuarkXPress 4.x.  
I.e., they'll always be available, and they certainly work, as-is,  
even if we can't really support nor update them.)

Cheers!
--Chris Ryland / Em Software, Inc. / www.emsoftware.com