The latest version is black and white, and so far they have come out with two new pokemon- Meleotta and Keldeo. I think Pokemon: Black 2 and White 2 will be coming out in Japan by June, 2012. There will also be two new mascots-Black Kyurem and White Kyurem.
In the Pokemon game, The two have the same ammount of pokemon to catch. My preference is the black Pokemon although it varies to many.
First, you need to get tornados and thunduros, then you must have those two Pokemon in your party and go to the abundant shrine. (if you have white, you need to trade tornados from black, and if you have black, do the same thing except for thunduros.)
You can't catch Mewtwo in-game in Pokemon Diamond.
abra and ralts are two of them
not at the begining. if you finished the game you will be able to catch old Pokemon too.
its more pokemon black two then it i black one
The way you get Landorus is by getting Tornadus first. Then after you catch him, you have to catch Thundurus. You're only able to get Thundurus in Pokemon White and Tornadus in Pokemon Black so you can only get the other from a trade. After you have both of them in your party, go to the place where it says you need to go to get landorus (somewhere on the East side of the map up a waterfall or two). Go up to the little shrine and he will come down to you and then you can catch him.
Mt.Moon
Bring a Togekiss over from any of your owned previous games to your Black and be sure to have a Ditto in your Black version.Ditto can get along with any pokemon regardless of their gender except legendary and genderless pokemon.Put these two together and you'll get an egg containing Togepi.Good luck.
in pokemon black and white
you can do two things 1:if you have another black or white game catch them on there and trade them or get a friend with black or white to catch them and trade them once you have obtained the c gear 2:use the action replay walk through walls code to obtain them (or any other cheating method for that matter)