Yes it does seem that March 14 2010 is the american release date of Heart Gold/Soul Silver and other places aside from Wikipedia say that (such as http://www.aussie-nintendo.com/news/20760/). Honestly I can't wait for March and I just want some new footage so bad!
Okay so here's some new info I got.
At school today a friend of mine said that it's going to be released on April 1 2010. He got it from Gamestop and currently I don't trust the date for two reasons. First the date itself might be an April Fool's joke. Then it's Gamestop itself. Before Brawl...
Nice! I still hate those evil Japans for getting it first though... but my waiting will pay off in about half a year. Dang that's a long time to wait...
man i can't wait. Heartgold and soulsilver come to the states soon. It'll be so epic. Although I think that they'll put some new areas into hg an ss so you can catch the hoenns that you can't get in the sinnoh version. While it's just speculation this is also based off of nintnedo's classic...