In the meantime, you may want to check out these enterprise solutions that seem to be getting traction:
Jackbe - Enterprise mashup solution. Sweetspot is a mashup layer that connects your web services in a secure, scalable framework.
Backbase - Enterprise Web 2.0 portal solution that actually delivers an easy to modify user experience.
zAgile - Open source Enterprise Semantic Wiki's - Has the potential to actually create usable knowledge across the enterprise.