All the rumours are well and truly heating up in front of next month's expected announcement of the iPad 3. 9to5Mac is reporting that they are starting to see supply constraints of the current model which has been an indicator of a model refresh in the past. The Australian store is showing all models in stock though.

Here are the most probable upgrades we can expect to see in the iPad 3:

• Retina Display (This would give the iPad more pixels than an HD TV)
• A6 processer chip - a Quad-core and the fastest Apple has ever shipped
• Improved cameras
• The chance that it will be "4G' (or LTE) ready

We'll let you know more as we hear details