A list that has been circulating the Internet is coming true so far.
http://www.nintendoworldreport.com/rumor/25061
In recent days, a complete list of English names for the 150 Pokémon introduced in Pokémon Black & White has been making the rounds on the Internet.
So far, each name on the list has matched exactly with Nintendo's official reveals through mediums such as episode announcements for Cartoon Network, screenshots, and official press material. Additionally, Official Nintendo Magazine UK's playthrough blog and videos of the English language version of Pokémon Black has further corroborated the list, proving each name to be correct so far.
Specialist Pokémon website Serebii.net are confident enough in the list that they have released it in full and changed every reference on their website to match. Their list can be found here. Please be aware that it may be regarded as containing spoilers.