Difference WAS 6.3 and 6.4

Hi,

We are in the middle of planning a project for converting our existing ITS application towards a SAP WebAS Webdynpro application.

In that respect I am curious to learn what the main differences are between release 6.3 and 6.4?

We also understood that release 6.3 is only available for ramp-up customers (but the sign-in process is being ended already) and that release 6.4 will only ramp-up as of december ...

We plan to go live end december so basically we have an issue here ... what is the "fastest"(non-official) way to become a) a 6.3 rampup or b) get the 6.4 software ...

Thx,

Steven