The short answer is that empty jars will not be brought back. For the liberty answer and everyone's opinions, check out any of the many very large threads on the topic.
Cans are also gone but no one mentions those. You would think if the issue really was about realism that they'd complain about the cans that were also removed and plates and such that weren't there to begin with.
Jars and cans are gone just like every other empty container.