The new Caldicott Guardian Manual has been released – see https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/581213/cgmanual.pdf.
It is a bit of a weird beast – alternate pages of the biographies of the authors with alternate pages of actual guidance.
Overall it is useful in terms of what it is reinforcing – I doubt it will stand the test of GDPR.
I am not even sure that the Caldicott Guardian role itself will stand that test.
2017 will be the year that a lot of things get tested and that assumptions get challenged.