I think the specific mention of the 4000 and Premier lines is simply because they have always been represented as a potentially separate deal. The big question has always been would someone buy the 4000 and Premier separate or maybe someone would buy the rest of the company without dragging along the 4000 and Premier. This is good news for the 4000 owners....when there has only been bad news for them for some time.
I am assuming the 125 series is part of the deal.
Many questions remain. But potential for success is high IMO. It will also be nice to be owned by a company that is interested in aviation. Onex and Goldman Sachs were never concerned about HBC....just numbers.