I know they just released the 1st box set for Nana but i heard they are actually doing a dubbed version. The I read on Amazon that this first box set was in Japanese with Subtitles. When will they release a dubbed version if they at all? Anyone found info ?

The first box set was in subtitles but that was because, at that time, it was recently licensed and had no plan to be dubbed but they wanted to release the anime ASAP to the US so fans would buy it.

However, they are now currently working on the dub. The English cast is available here:

http://www.animenewsnetwork.com/encyclop