A lot of Nintendo news comes our way, courtesy of the company’s press conference at GDC today.

• First up is word that the ever-popular Wii has shipped a stunning 50 million consoles worldwide since its debut in 2006. Nintendo claims it is the fastest-selling console ever.
• The DS appears to have reached a sort of gender harmony, with the company claiming that 47% of all new DS owners in 2008 were female and that women make up 27% of the platform’s life-to-date install base.
• Addressing the Wii’s lack of storage options, Nintendo today released the SD Card Menu as part of its latest system update. This download will enable Wii users to launch applications, such as WiiWare and Virtual Console titles, from an inserted SD card.
• The Wii will today extend its Shop Channel to include classic arcade games. Initial offerings will include Space Harrier, The Tower of Druaga and Star Force. Pricing will range between $5-6.

There were two game announcements, too:

• Ninty’s head honcho Satoru Iwata announced Rock n’ Roll Climber, an upcoming WiiWare game making use of the Wii Balance Board. The game will have players scale virtual rockfaces, shifting their feet on the balance board to control the climber’s feet.
• The second is a rather big one – a new Zelda game for the DS! Dubbed The Legend of Zelda: Spirit Tracks, the DS title will feature a similar visual style to The Phantom Hourglass and will see traditional gameplay in the form of combat and dungeon exploration. It is due out later this year.