Anyone wondering why not Evolution (an excellent mail reader and calendar client) should consider that OO.o is headed by Sun and Evolution has strong ties to Mono (free implementation of Microsoft's .NET) which competes with Sun's Java.
The post /. referred to says something interesting about OO.o 3.0:
The only objective of the 3.0 will be to make it much more modular and running on tops of frameworks such as Eclipse, Netbeans or Mozilla's XUL.
Uh, do I hear total rewrite? OO.o 3.0 before 2010?
Download OpenOffice 2 now!