Must...not...spoil....must...not...spoil.
*cracks and clicks thread anyway*
A lot of interesting developments (pre-evos for legends, wtf?), but I'm also kinda disappointed in the size of new Pokemon. The pre-release info of ORAS didn't bother me too much since there weren't really any new Pokemon besides M-evos, but showing off nearly all the new Gen VII Pokemon in official pre-release info seems a little bit strange. Considering the geography of Alola, I was also kinda expecting more variety in oceanic water types in the regional dex. The new Water types are cool, but the previous-gen waters seem kinda lacking. No Horsea/Skrelp, Mantine, Remoraid, etc. Lack of Mantine (and Remoraid by extension) seems especially weird since its a parallel of Skarmory, which is in the dex.
Two pairs of fossils + Aerodactyl is pretty interesting though, especially for a region that, as many have already pointed out, isn't too ancient; two fossil pairs in one game is a first afaik. Considering Hawaii has a decent sea turtle population, I wonder if Tirtouga and possibly Archen will be our first "living fossil" Pokemon that you can catch in the wild, while Aero and the Sinnoh Fossils remain as traditional fossils that you have to restore?