32GB iPhone confirmed?

As time passes, Apple's attempts to keep quiet about upcoming iPhone models are failing. Now, a post on iClarified, AT&T Accidentally Confirms 32GB iPhone?, appears to confirm rumors about a 32GB iPhone.

According to the post, iClarified "received information from an anonymous tipster directing them to the AT&T BlackBerry Trade Up site, where AT&T customers can trade in their specific cell phones to upgrade to a BlackBerry."

Customers visiting the site can select the phone they want to trade in, the BlackBerry model they want to upgrade to, and are then told how much money will be applied toward that new phone.

The product selection drop-down menu is telling, since it reveals a 32GB iPhone model listed at the bottom of the list of iPhone models. The site also calculates the value of the 32GB iPhone at $355 toward a new BlackBerry. In comparison, a 16GB iPhone is valued at $205.

Also consider that this isn't the first rumor of a 32GB iPhone--we reported about it here, and T-Mobile in Austria briefly listed a 32GB iPhone model as "coming soon" before pulling down the post.

We probably won't know for sure until WWDC in June, but since this isn't the first time we've heard this 32GB iPhone rumor and because the capacity jump is a logical path for iPhone hardware, we think the 32GB iPhone will be available this summer. Do you? Leave your own guesses in the comments.