First, the Diamond Superstar (DA50) is progressing quickly through its test flight program. This is a high performance single engine, which was shown for the first time at the last Diamond Christmas party, and flown for the first time last spring, by Diamond CEO himself (and a test pilot).
The definitive diesel engine is not selected yet, could be Thielert, but SMA is still in the competition. The new thing is that there could be a pressurised version of this high performance single engine... making it quite appealing. The last pressurised single engine I know are the Piper Malibu series, and the P210 from Cessna, both quite old design...
Something else pleased me recently, while reading a paper about the Cessna Citation Mustang very light jet... its avionics is nothing else than... a G1000. So once I'll have found the money, the transition should not be that hard ;-)