Ars rounds up the new features in the forthcoming release of the Adobe CS4 suite to be released sometime next month. I think I'll have to upgrade for the multipage docs in Illustrator alone.
Photoshop CS4
* GPU-based drawing of documents onscreen
* 64-bit for Windows
* Expanded 3-D paint, lighting and rendering tools
Illustrator CS4
* Multipage documents with different sizes
* Indesign-style separations preview
* Many updated tools like gradient and blob brush
Indesign CS4
* Live Preflighting
* Easy Flash document creation
* Smart guides and spacing tools
Flash CS4
* Powerful Animation presets
* H.264 encoding
* Expanded 3-D transformation and object support with inverse kinematics and bones
http://arstechnica.com/news.ars/post/20080923-adobe-launches-cs4-suite-of-applications.html