How to follow changes to porting best practices?

[Mel Pilgrim]

Nearly every time I send a maintainer update, there's some new method I 
don't know about.  There's nothing about it on ports or ports-announce 
and porttools/portlint don't mention it either.  I end up scanning 
through commits to ports/head/Mk to find them after the fact.

What do I need to do to track changes to Ports BCP?  It seems 
subscribing to ports and ports-announce, and using the existing porting 
tools is insufficient.