Now that the NDA has been lifted it’s going to be a lot easier to find interesting links to other blogs discussing iPhone Development.
Erica Sadun has posted sample videos accompanying her upcoming iPhone Programmer’s Cookbook.
Some great advice on improving the performance of table views.
Managing the keyboard and ensuring that text fields are visible when you enter text is painful. Matt Gallagher presents a generic solution to this problem.
A very nice tutorial from Matt Long on creating your first iPhone application using Interface Builder.
A series of articles describing the software internals of the iPhone.