Rumors have suggested that a MacBook Air and Mac Pro refresh is imminent. Today, 9 to 5 Mac reports  that a tipster  has revealed that Apple will be releasing new MacBook Air and Mac Pro models this week along with OS X Lion. “Mr.X” is supposed to be a reliable tipster.

According to their tipster,  Apple will be releasing four new MacBook Air models and will match up with the current lineup of two stock configurations each in the 11-inch and 13-inch sizes. The models numbers for these new MacBook Airs are:

MC965LL/A – K21, BETTER, BTR-USA
MC966LL/A – K21, BEST, BTR-USA
MC968LL/A – K78, BETTER, BTR-USA
MC969LL/A – K78, BEST, BTR-USA

The Mac Pro is also expected to get a refresh. Apple is expected to offer three standard stock configurations alongside a dedicated “server” configuration. The model numbers for the new Mac Pros are:

MC936LL/A – J40, ULTIMATE – USA
MC815LL/A – J40, BETTER – USA
MC816LL/A – J40, BEST – USA
MC914LL/A – J59, BEST – USA

Mr.X has not provided a specific release date, but according to rumors a launch date for July 14th is expected.