Official Japanese website Utada.jp, was recently updated for the "Come Back To Me" release. Similar to Utada.com, it has been updated with the "Come Back To Me" full preview, but Utada.jp has also been updated with the upcoming English album release dates:
Wednesday, March 4th, 2009 for Japan and Tuesday, March 24th, 2009 for the US!

Also, thanks to Yahoo Japan, Natalie.mu and Utada.jp, we now know Utada's *official* MySpace page is http://www.myspace.com/thisisutada

Thanks to SwallowTail