That is correct - you can add as many W-2s in TurboTax as you have.
If the one of the jobs is a self-employment gig, then you will probably want the Self-Employed (Online) or Home & Business (CD/download) products, because these products not only handle both W-2s and the Schedule Cs for your own business - note, Premier can create a Schedule C, but does not allow you to enter most business deductions, so you want one of the two products I mentioned if you have business deductions.
@charlie-3