As long as you downloaded the list from the official mba.link, that is most likely the case:http://www.mba.com/mba/TheGMAT/TestStru ... .htm#Link3
These are all the current topics being used. There's no such thing as an absolute, and there's a miniscule chance that they might add some new topics to the list between the time you download it and take the test, but it's not something worth worrying about.
More importantly, though-- remember that the AWA score does not contribute to your final scaled GMAT score (200-800) at all. You will receive a separate subscore for the AWA, and the vast majority of business schools care little about your AWA score after you hit an "adequacy" threshold. Any number of prep courses can teach you a formula/template that will let you write an adequate essay. By all means read through the list to see the kinds of questions GMAC is asking (you'll probably start to sense similarities among many of the prompts as you this), but if you have a limited amount of time to study--as most do-- you're far better served using that time to improve your quant or verbal skill set that trying to pay detailed attention to the *enormous* number of possible topics for a section that has little real-world payoff.
JP Park | Manhattan GMAT Instructor | Los Angeles
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