Only 2 km eggs?

It is an event to get players to pay for incubators to use on 2km eggs.
We don't have any information yet, but I would not be surprised if nearly everything is a 2km eggs, including things you get from other egg distances.
...but that is just speculation at this stage, as no one knows anything for sure.

By the way, could you tell me if the event is started.

More 2K eggs? That's shady. If you pay for the coins, it means you will pay more for those who only hatched 10K or 5k with purchased incubators.

I'm expecting that the Gen2 starters will be added to the 2 KM eggs.

If you haven't already heard, Gen 2 starters are hatching from 5km eggs.