With Windows-based ultrabooks on the rise, it’s now rumored that Apple is considering a another less expensive ultrabook models. Reports are suggesting that Apple is readying a new entry-level MacBook Air model that could launch in the third quarter this year. Details are extremely limited, though it is presumed that the notebook will be an updated 11-inch model that could launch around the same time as Apple’s new 13- and 15-inch MacBook Pro models, which are expected to become available some time this summer. Apple may reveal the new model during its annual Worldwide Developer Conference, which begins on June 11th.