Yes the newest V5.1 Ease is out and I use it even on 2007 Z06.
IF you have the BCT-INT Ease interface you could via Team ZR-1 upgrade the software. If its a older interface then you would have to get complete new scanner since the C6 uses the new "CAN" protocol and link speed which older scanner interfaces did not have.

If wanting all top functions that uses GMLAN which is even faster would require the wireless interface since GM only does GMLAN on it.

V5 has of course new features and functions older scanners did not have.