Fans of Pokémon's Hoenn region (all six of you—kidding, kidding) will be happy to learn Pokémon GO is getting a major injection of wildlife introduced in Pokémon Ruby and Sapphire.
In fact, two major updates are imminent for Pokémon GO. We started seeing third-gen Ghost-type Pokémon in the Halloween update, and 50 more Hoenn region Pokémon will move in across the coming weeks. The featured beasties include the region's starters: Treecko, Torchic, and Mudkip. The press release Niantic handed out earlier this morning also makes mention of Wailord, whom I intend to catch and name "Rob's Mom."
The other big update coming to Pokémon GO is a dynamic weather system that influences which Pokémon you might see at a given time. If it's raining around your abode, it'll rain in the game—and that'll bring the water-type Pokémon a-running. Some water types get stronger in the downpour, and you earn more rewards for capturing them.
Rain isn't the only weather condition that effects Pokémon. Expect Fire- and- Grass-types to perform well in battles when the weather is hot and dry, and expect Ice-types to appear in larger numbers when it's snowy and cold.
Hopefully the new update will get you off your couch and back outdoors now that the colder weather is rolling in (unless you live in the southern hemisphere, you lucky Psyduck).