I didn't get a swag bag in 2015, but in addition to the floor mats, etc. mentioned above, there was a tow hook. Also the cargo cover for the trunk was originally an extra accessory but has been standard for awhile now.
The mobile connector bundle is probably the most important of all those bits (at least for most people). It should have the mobile connector itself, adapters for the NEMA 14-50 and NEMA 5-15 outlets, and a round carrying bag. There should also be a J1772 adapter, which I'm not sure if it's counted as as part of the mobile connector bundle or not.
Bruce.