We all know that Apple will definitely be making some major software announcements at the upcoming World Wide Developers Conference. Some of the biggest announcements will be iOS 6, an updated version of iCloud, and OS X Mountain Lion. If you want to buy some new Apple hardware soon, don’t fret because you can also expect Apple to make an announcement about new hardware. Apple will likely showcase a new 15-inch MacBook Pro with a thinner design, Retina Display-like resolution, and faster I/O. According to sources with 9to5Mac, Apple is also planning to announce an update to four out of their five Mac hardware lines at the WWDC conference. The last time that the iMac line was updated was in May 2011 with faster processors, improved graphics system, FaceTime HD, and Thunderbolt. iMacs are due for an update and so are Mac Pros.