Let's say you want to know when a Nintendo game is coming out on a Nintendo system. Or when somebody else's game is coming out on a Nintendo system. You'll need some kind of release schedule.
Like this one! Here's a list of all upcoming first and third party games due for a Nintendo system. Nintendo games have release dates (where applicable), third party games do not.
Your mileage on these dates may vary depending on which games you're most excited about, but it looks like Spirit Tracks in on course for a 2009 release in the West, and interestingly, while Mario Galaxy 2 and Metroid: Other M are scheduled for 2010 in the US and Europe, in Japan they're simply "TBA".
Kotaku AU Note: Aussie dates may vary from the Europe dates. And don't forget Punch-Out!! is out here August 27, only at JB.