Rossi will produce a demo that will show what he wants to show. The job of the cynics is to come up with an explanation of the deceptions that Rossi has invented. Rossi will not show anything that his competition can used to move their research forward.
The calorimeter error arguments should be dusted off and gotten ready for another dance on the stage. There is the wet steam gambit that might be worth a try. The hidden wire is going to be a hot one since the demo will show a few milliwatts of input energy and a huge amount of heat production due to a COP in the 2000s. I don't think that the measurement error argument will work since the COP will be far to high.
Y'all need to go back over those millions of old posts to refresh your memories in preparation for the big demo. This could be the last one before product manufacture...time is short...so get prepared...we can't let this scam gain more life than it already has.