Niantic and The Pokémon Company International announced that Ditto is now available in Pokémon GO. The Nearby feature has expanded to new area of the world and there has been some CP changes.

DITTO TO REVEAL ITSELF IN POKÉMON GO

Elusive, Shape-Shifting Pokémon Known to Disguise Itself as Other Pokémon
Pokémon GO Trainers now have the chance to catch Ditto, a Pokémon with a curiously blobby shape and the capacity to mimic the looks and traits of other Pokémon. This means that a Pokémon you think you captured could be Ditto, which reveals its true form only after it’s caught. Also, when training or battling at a Gym, Ditto will copy the appearance, types, and moves of the first Pokémon it sees, and it will stay that way through the remainder of those Gym battles.

The Nearby feature has expanded to new areas

Trainers, After reviewing your feedback, we have made some changes to the Nearby feature we were originally testing in San Francisco, California. We have changed the feature to only show the Nearby feature if a PokéStop is close to your location. In addition, we have also made changes to the way Sightings now works.

We will be expanding the ability for Trainers to test this updated version of the features and provide us with feedback. Starting today, Trainers in the following areas will now be able to use the new Nearby and Sightings functionality:

• United States of America: All states west of the Mississippi River (except Hawaii and Alaska)
• Canada: British Columbia, Alberta, Saskatchewan, Manitoba, and the western half of Ontario.
• Australia: All states and territories

Source: http://pokemongo.nianticlabs.com/en/post/nearby-nov2016/

Adjustments to the Combat Power of Various Pokémon

Trainers, We have made adjustments to the CP (Combat Power) of various Pokémon. Some Pokémon, such as Alakazam, Rhydon, and Gengar will have their CP increased. Others will have their CP lowered. These changes will allow a more balanced and competitive battling and training experience in Gyms. We will continue to adjust the CP going forward to improve the game balance when necessary.

Source: http://pokemongo.nianticlabs.com/en/post/cp_update/