The 12-month calendar on QR’s website has been updated to include more 3rd party closures occurring in this year. The change in language is also quite interesting. It used to be CRR led projects. I would assume the language has been broadened for LGCFR and B2N.
Notably, the April track closures have expanded.
Bowen Hills to Boggo Road is probably required to tie in the new CRR tracks just north of Breakfast Creek. This will require the relocation of some signalling equipment which is currently placed where the DOWN CRR track needs to go.
Banoon to Boggo Road would once again be for Clapham Yard and the station rebuilds.
Caboolture to Gympie north though wouldn’t be related to CRR at all. I suspect that this is the first major track closure for the B2N duplication.
Unfortunately the Gold Coast will continue getting the short end of the stick with an extended closure.
And then once again in July 
.
Also, anyone know what ‘third party’ this closure could possibly be for? I suspect it must be a data entry error as there’s no ‘third party’ projects out west.