Multiple sources are repeating Stuff.tv's report that Apple is planning to bring the Nike+ system to the iPhone and iPod touch. Nike+ is of course a special kit, originally made for iPod nano, that will record the distance and length of a walk or run -- you stick the little sensor in your shoe, and it works as a timer and pedometer to record personal workout stats.
Stuff also reports that in addition to bringing along the sensor system, the new Nike+ system may also be able to take advantage of the iPhone's and touch's wifi by sending stats from the sensor directly to Nike's online database,where a new "Coach" system will help you schedule runs and activities.
Sounds pretty amazing. Of course, this is only the beginning of the kind of "life management" software that we'll see coming out of the SDK. Stuff suggests that your iPhone will help you know when go to out and for how long, but of course we know that by the time June comes around it'll be able to do a lot more than that.