I’ve been terribly unlucky when buying Apple products over the year. It’s almost as if simply the swipe of my credit card can actually create a new product release. So I’d decided to be more educated with my timing and less than 10 minutes on Google revealed the web site that is my (and possibly yours) saviour!
The buyers guide on Mac Rumours has a full list of Apple products, when they were last updated, what’s rumoured to be coming and loads of relevant information. It really should be something you refer to when thinking of your next upgrade or new purchase.
Sadly now, I can’t justify that Macbook Air; it’s due for an update 
