NTR FO with 1000 hours completed the assessment in July - still swimming.
From what I'm led to believe from chatting to various pilots at Jet 2 & from other airlines Thomas Cook pilots have been given priority - especially with the fact jet 2 have taken on some of the ex Thomas Cook Airbus fleet (makes sense IMO as we already have jobs). Furthermore, with the acquisition of additional AC / routes etc they'll need to reassess where they need aircraft and crew i.e your base preference and experience will be a factor in when you get a call for a start date.
I also recieved communication from another airline saying that an interview that I applied to prior to Jet 2 has been pushed back as I am NTR and not available for immediate start.
However I do know a few 737 TR guys who have interviewed after myself and been given start dates early 2020.
Best of luck to anyone who is swimming / going for the assessment.