We have an RV-8... great machine (as with the 7)...
I would not count on IFR anytime soon, if at all. Even if it were "possible", we have yet to see what Instrumentation would be required to make IFR legal. A lot of RVs have glass cockpits of wonderful instruments, but in practice maybe unlikely to be certified / approved for IFR.
NoD
RV-8 website