Apple today announced the release of two new iPhone and iPod touch models, each with double the storage capacity of the previous top-end models. The iPhone now comes in a new 16GB model for $499, which will be sold alongside the $399 8GB model. Similarly, the iPod touch is now available in a 32GB model for $499, joining the 16GB model for $399 and the 8GB model for $299. “For some users, there’s never enough memory,” said Greg Joswiak,…