Analysis Office 1.4 SP 10 released in Service Marketplace
I just found Analysis Office 1.4 SP 10 in http://service.sap.com/swdc
The corresponding note is also released: http://service.sap.com/sap/support/notes/2059338
With SP10 is should be possible to use “Create WebApplication” again if Design Studio is installed in 64bit version.
Update… you will need SP11 to have Create Web Application again for combination of Design Studio 64bit