Thanks for pointing this out! This was a bug that was otherwise
unnoticed not an intentional change. It will be fixed soon in an
upcoming release.
As for change notification, the best we can do right now is offer you
the build # and date of the current release which is available via the
releases/api/current method:
http://build.kiva.org/api#GET*|releases|api|current
Releases usually happen a couple times during the week.
skylar