Fearing the notebook market will not bounce back during the fourth quarter, Intel’s Ultrabook partners Acer, ASUS, Lenovo and Toshiba will initially ship fewer than 50,000 units of the new thin and light notebooks DigiTimes reported on Tuesday. Intel, which will invest $300 million in Ultrabooks during the next three to four years, will also hold a conference on September 14th in an effort to attract new partners to the platform. The new notebooks are manufactured by Quanta Computer and Compal Electronics, and are expected to ship in September for launches in October. Sources speaking to DigiTimes also suggested that the notebook market may not bounce back enough for Intel to achieve its goal of owning 40% of the notebook market with its Ultrabook devices.