Yes, but it's hard to notice because they don't preserve the last line that normally contains version information.
Some evidence:
https://linux.die.net/man/1/rsync says "This man page is current for version 3.0.6 of rsync", released in 2009; rsync 3.0.7 was released later that year.
https://linux.die.net/man/1/pv says "Frequent use of this third form is not recommended as it may cause the programmer to overheat". But this joke was removed in pv 1.4.0, released in 2012.
https://linux.die.net/man/1/play says "Copyright 1998-2008 Chris Bagwell and SoX Contributors". The copyright years were updated in sox 14.4.1, released in 2013.
Some evidence:
https://linux.die.net/man/1/rsync says "This man page is current for version 3.0.6 of rsync", released in 2009; rsync 3.0.7 was released later that year.
https://linux.die.net/man/1/perldelta is for Perl v5.10.1, released in 2009; Perl v5.12 was released in 2010.
https://linux.die.net/man/8/badblocks doesn't document the -B option, which was added in E2fsprogs 1.42, released in 2011.
https://linux.die.net/man/1/pv says "Frequent use of this third form is not recommended as it may cause the programmer to overheat". But this joke was removed in pv 1.4.0, released in 2012.
https://linux.die.net/man/1/play says "Copyright 1998-2008 Chris Bagwell and SoX Contributors". The copyright years were updated in sox 14.4.1, released in 2013.