The Grob 140.....
Last time they replied to an email, they said it has been postponed while they concentrate on their little jet.
Just like the rest of the known universe then... there must be an awful lot of punters out there who will have to buy these jets, else there will be a fantastic number of unemployed light jet salesmen very soon.
The problem with the G140 is the price. I think it was nearly GBP 800k which is quite a lot considering you can buy a very good condition used pressurised turboprop for that. You could get a mint-condition Meridian with modern avionics for that, and most punters want the comfort of pressurisation. Or a slightly old TBM700.
OK, the operating costs of anything pressurised will be way above that of the G140; probably 2x more. But at that price range, people have the money.
The 140 would have tremendous versatility at the lower end of GA but there isn't much money down there. If they did it for GBP 400k or less they would sell lots, IMHO.