As long as the certs continue to met those outlined on TechNet (http://technet.microsoft.com/en-us/library/gg699362.aspx) and are still valid, then no. Note that the server side cert requirements have changed slightly in that a site signing cert is no
longer required. Also note that this is really an HTTPS client communication requirement and not a IBCM requirement (although IBCM requires HTTPS client communication).
Jason | http://blog.configmgrftw.com