DaveReidUK, the latest article says
"The aircraft is not a modification; it's a completely new aircraft. The overall philosophy is the same but the wings, landing gear, fuselage, everything will be bigger," says Bagnato.
He expects that it could take up to five years for the new aircraft to receive certification, once shareholders give the approval.
That's big new IMO. A state of the art 5 abreast fuselage is a direct attack on Embraer and Bombardier. The first one will be a 5 abreast turboprop. The next familymember probably a stretch (120 seats) and the concept has enough space to handle e.g geared turbofans, CROR's in the future. A bigger wider fuselage, with a serious cargo bay has all kinds of future options.
IMO it could be seen as a reaction on Embraer and Bombardier putting the A318 and A319 out of business..