Before Apple's press event tomorrow, 9 to 5 Mac has uncovered some details about the upcoming announcement. 

The iPad Mini has been rumored to debut at Tuesday's event as Apple looks to compete with smaller tablet devices like Amazon's Kindle Fire and Google's Nexus 7. However, according to a new rumor, in addition to an  iPad Mini, and a 13-inch Mac Pro with Retina Display, Apple will also debut a refreshed iPad. The new iPad will be an updated version of the one released this past spring with a 9.7-inch Retina DIsplay and will come with a Lightning connector like iPhone 5 and the new iPods. 

9 to 5 Mac also believes the iPad Mini will cost $329, making it more than $100 more expensive than the Kindle FIre HD and Google Nexus 7. The site also believes there will be versions with built-in cellular connections that will cost more than the wi-fi models. 

[9 to 5 MacRumo via Slash Gear]