LAA actually have a sub committee working on IFR/night at the moment. Minimum equipment for IFR is specified in CAP393 and is actually suprisingly little so uncertified glass with the minimum of type certified CAA approved instruments would be legal. RV's are a good candidate as many fly IFR in the US. The RV-9 and RV-10 are the most stable platforms. However I agree with Nigelondraft and won't hold my breath either. I'm told the first are predicted to be those previously flown IFR when CofA that have now gone onto permit.
Steve (RV-9A)