AppleInsider is reporting that the Intel based computers are unlikely to show up on Tuesday as reported by many other online sites.
The rumour site believes that manufacturing was ramped up over the last week but still seems to think its unlikely that Apple will release the notebook.
The site is reporting that iPods will also be updated later this month, it is unknown which line will be updated but speculation points towards the iPod shuffle, even though it has been recently reported that sales of the iPod shuffle had increased recently.