Is it possible that it will never get confirmed?
David Rabahy recently sent a transaction that had no fee included as a test. It confirmed after 11 days.
Hey, what do you know, it went through. So, some no-fee transactions are still getting through eventually. Mine only took 11 days.
However when calkob tried submitting a zero fee transaction it didn't work.
I recently done the same thing from my core wallet, which wasn't very successful, i think that no fee transactions have been assigned to the annuals of bitcoin history.