The first refresh of the iPad might be around the corner, eventually anyway. Indeed, with the iPhone 4 sporting the new retina display, it is certainly likely that Apple will eventually follow suit and update all of its products to a similar display at some point.

As a reminder, the retina display features an amazing resolution of 326 pixels per inch (ppi), giving the new iPhone 4 an overall resolution of 960 x 640, or four times the resolution of the existing iPhone model. The screen of the first generation iPad, meanwhile, comes with an approximate pixel density of 132 ppi and an overall resolution of 1024 x 768.  However, as most can attest,  the current screen on the iPad is smooth, clear and well, perfect for the iPad.

However, the site 9to5Mac.com has examined Apple’s own Developer SDK files, and the evidence is there that Apple isn’t apparently going to rest on the existing iPad screen specifications.

They explain that,

There are two sets of icons for the two types of displays of the iPhone, and now the same for two types of iPad Displays. We know that a higher-resolution variant of the iPad is now coming soon, and from this we have educated speculation that iPad will go retina. This is based on Apple’s past history of introducing a new feature and then spreading to their rest of the lineup. An example of this is the iSight camera first appearing on iMacs introduced on October 12, 2005, and now appearing across the Apple lineup including notebooks and now the iPhone 4.

Feels a bit early for a refresh, but who knows?

[Photo: Let's Go Digital]