Old article now, check out the full Intergeneration Evolution for all generations.
Generation 2 Pokemon are already in the game files and will eventually be released, adding a further 100 Pokemon, bringing the new total to 251. There are things all players can be doing now to prepare for generation 2.
Of the new Pokemon coming, 11 of them evolve from Pokemon you can catch and save candy for today. Some of these new Pokemon will be stratigically valuable for battling. Maxim CP for the new species has been included below, see Pokemon Stats for full stats. The Evolver has been updated to include Gen 2 Pokemon, click on a Pokemon below to see what the Gen 2 CP of your current Pokemon might be.
Of particular value may be Kingdra, with double resistance to both water and fire. Combined with possible dragon movesets, he could be particularly powerful against both Vaporean and Dragonite. Additionally Scizor could prove valuable against Executor who has double weakness to Bug moves. In the event Porygon maintains his general rarity, seeking and saving candy for Porygon2 would also be a priority for trainers eager to prepare.
In addition to these 11 evolutions, there are 7 new pre-evolutions:
Both the Pokemon Stats and Evolver have been updated to include generation 2 Pokemon. We'll continue to roll out Generation 2 as new data comes to light. You can also view how the new Pokemon compare as defeners using the Best Defenders page.