Not from the leaked demo, but from a source. Alola Persian, Alola Diglett and Alola Dugtrio + first form sea anemone and water spider reveal next week.

*Rowlet 3 is Grass/Flying, "Shearoot".
*Litten 3 is Fire/Dark, "Savenger".
*Popplio 3 is Water/Fairy, "Merdonna".
*Pikipek 2 and 3 are Normal/Flying, "Barbeak" and "Hanahoukan".
*Crabrawler 2 is Fighting/Ice, "Crabominable".
*Anemone are Poison/Water, "Monevious" and "Anemonous".
*Water Spiders are Bug/Water, "Awanid" and "Naurachnid".
*Morelull 2 is Grass/Fairy, "Morechill".
*Salandit 2 is Poison/Fire, "Embelizz".
*Wimpod 2 is Bug/Dragon, "Podacious".
*Ghost Wheel is Ghost/Steel, "Argghos".
*Tapu are Tapu Koko (Electric/Fairy), Tapu Halo (Psychic/Fairy), Tapu Toro (Fire/Fairy), and Tapu Echo (Ghost/Fairy).
*Solgaleo and Lunala evolve from the Psychic-type "Numu" (stage 1) and Novus (Stage 2).

* Ultra Beast are corrupted versions of human ambitions from another dimension. UB-1 is Lillie's desire to interact with Pokemon twisted into its own form. Ultra Beast when you fight them as bosses have no weaknesses or resistances, and when you catch them the second fight gain a true type and are given a name.

*UB-1 is codenamed "Phantom". Named "Gelgorgon". Ghost.
*UB-2 Absorption is named "Thoraxxium". Fighting/Bug.
*UB-2 Beauty is named "Andromejah". Fairy/Bug.
*UB-3 is codenamed "Link". Named "Cablellah". Electric/Ghost.
*UB-4 is codenamed "Eternal". Named "KaguUMA". Grass/Steel.
*UB-5 is codenamed "Compass". Named "Eucollider". Flying/Steel.
*UB-6 is codenamed "End". Named "Googol'byss". Dark/Ghost.
*UB-7 is codenamed "Warrior". Named "Onyx-X". Rock/Fire.
*Marshadow has an Ability that always makes it "Typeless", but listed as Normal. Is also known as UB-0 "Prisoner".

Alola Diglett/Dugtrio are Ground/Fairy. Alola Geodude and Graveller pure-Rock, Golem Rock/Electric.