If you’ve been laying off the Pokémon Go for a while due to a lack of new monsters, prepare to be glued to your phone again. Niantic is now adding pokémon from the rugged Sinnoh region that first appeared in 2007’s Diamond, Pearl, and Platinum games.

Of course, it’s not so simple as a dump of a hundred new ‘mon into your area. The new guys are arriving in waves, likely meaning the most common sorts will start appearing today, while cooler ones and sets of themed critters will arrive over the coming weeks.

These are part of the Generation 4 set, but it’s not clear yet which will be appearing first or indeed at all. It’s entirely up to Niantic and you can be sure they’re going to mete these little guys out over several months, interspersed with other events — anything to keep you catching.

Everyone will probably have a Chimchar on their shoulder soon, because that sucker is cute, but ultimately everyone is going to want a Dialga. I get the feeling they’re going to be a regular feature at gyms soon. I for one will be working to evolve a Glaceon.

There are also some new evolutions, so don’t trash your mid-tier pokémon just yet. Magmortar, Electivire, Tangrowth, and Rhyperior mean you’ll have a use for all that extra candy.

Update your app and start draining that battery, Trainer! And don’t forget that we’ve got Niantic’s Ross Finman at our AR/VR Session in LA this Thursday. Drop by if you’re in the area.