While that list does have many of the zones or at least names that eventually came in many future expansions, it's hardly a predictor of expansions. Most of the zones are grossly out of order, jumbled around and just listed with no real rhyme or reason in a way that no matter what Blizzard came out with related to the existing lore of 2007 it would vaguely resemble something from this list because it literally just lists all the major lore locations that were known about then. Suggesting this list predicted MoP because it lists it as a single starter level zone is a far leap to make too. The idea of Pandaria was known even then because of the Chen Stormstout and his origins as far back as Warcraft 3 so that isn't some grand predictor that it was included as a single starter zone and then became an entire expansion. That's a major stretch. In addition, where is WoD? an entire expansion not even mentioned anywhere on that list. The only reason people would be using that list to try to automatically say it has to be a South Seas expansion, is because that's all that is left on that list of zones that were known then, but as I already stated, we got WoD, so just because we don't know about a zone or place (The entirety of MoP and WoD as examples) doesn't mean we can't have an expansion there without it having to be from that list in some vague fashion.
This list was never a real thing, and just a random thing someone made of known areas in Warcraft lore and then threw some level ranges and groupings with them. Nothing more.