According to the personal weblog of Martijn van der Meulen, product manager for EA Holland, the Nintendo developer site is now referring to the Nintendo DS portable as the “Nitro”.
"Nintendo has had a website for several years, for the people who develop games for their systems," explains van der Meulen. "On this website, and on the part where I don't need to log in for, the name Nitro is being communicated. The Nitro? I can't say too much about it (NDAs) but I’m sure it's pretty obvious now for some people."
Source:
gamesindustry.biz