I have a theory, from what slash said about releasing a couple of songs and then he says the idea is to be freed up to work on a new album after that.
I think it must have been part of the contract when they got together that the new band had to work on and release a set number of axls unreleased Chinese demos.
I think slash hopes they will all work on a new album of new material together in the future, but...
I mean they will probably squeeze another tour in before they even think about another album.
If ticket sales start to go down then we might see a bit of action on a new album, but they would have to go down dramatically for any real progress to be made on that album.
They all know they are more interested in dollars than artistic integrity with this gnr project. Not much money to be made in an album anyway.