IBM has released on Fixcentral the new CR3 for Connections 5 that implement several fixes and improve the reliability of the best social platform on the market.
Here the complete fix list
Here the database schema upgrade
Here the step by step guide about CR3 and Filenet for CCM con installazioni di CCM
Here the list of filenet components with version for any CR release
The raccomanded Websphere for CR3 is 8.5.5 FP4 but FP2 and FP3 still supported.