Well I'll be
ed: they did scrub it from AIP while I wasn't looking...
AIP ENR 1.1 - 79
60.2 The pilot in command of an IFR flight must notify the intention to amend route, deviate from track or change level in sufficient time for ATS to advise traffic.
Having said that, the one that gets my goat is "Monitoring CTAF". Well, what am I supposed to do with that? Tell me you're changing to CTAF or don't say anything at all!