On its face, RDC 8 *looks* the same as RDC 7. Click on the icon in its top-left corner, click "About," and if the versions are "6.2.9200," that *is* RDC 8.
BTW, I didn't do any of the enablement stuff on my Windows 7 machine; just installed the DTLS hotfix, restarted, installed RDC8, restarted, and it was working.