Tired of sifting through /usr/ports/UPDATING for notes that affect only those packages installed on your system?
Tired of grepping for issues that may have arisen from/to certain dates?
pkg_updating(1) analyses /usr/ports/UPDATING and does the heavy lifting for you.
To obtain the relevant entries from, say, two weeks ago, do:
# /usr/sbin/pkg_updating -d $(/bin/date -v-2w +%Y%m%d)