DESO in it's traditional format has gone the way of the dinosaurs. It is however due to return within the next few months under the guise of "Short Course Cadet SO". I believe it will have a similar format to the Qantas Level 2 Cadet Course (if anyone happens to be familiar with that), although obviously built around HK exams/licenses rather than Aus. Somewhere in the vicinity of 2-3 months in ADL I understand. Definitely require a CPL, not sure about IR or hours requirements.
The catch? No (or perhaps sometime in the future
reduced) housing assistance of course!
As for DEFO, in my opinion when and how much will depend to some extent on the outcome of the BPP court case/appeal.
Or perhaps the "new DEFO" will fly freighters out of Shanghai with "Air China Cargo" written down the side....