I guess the labeling is the same as a few years ago.
You can get a SR5, and you can also get a SR5 package. So that is confusing.
For me the biggest option is the gas tank. I think you need a SR5 package to get the bigger tank, unless it is a line item add on. Silly.
Generally if you see a bench front seat, then you get the smaller gas tank. Having the shifter on the floor is the SR5 package upgrade.