Is there a label on the bottom or anything that would show what version it has?
I don't know, however, if you're getting current stock rather than a unit that's been on a store's shelf for 6 months or so, it should be up to date as regards its firmware.
Regardless, if you download the complete user guide from this link and follow the instructions on page 9, you'll be able to find out exactly what is its firmware version.