Hewlett-Packard will follow up its TouchPad launch next month with the release of an unannounced 7-inch tablet in August, Taiwan Economic News reported on Friday. Citing information from an Inventec Corp. subcontractor, the Taiwanese manufacturer is said to have received a healthy number of tablet orders from HP. The Palo Alto-based company has reportedly ordered between 400,000 and 450,000 tablets per month from Inventec, which also manufactures notebook computers for HP. The source claimed that HP’s orders are comprised of both the 9.7-inch TouchPad set to launch on July 1st, and a second, unannounced tablet that will feature a 7-inch display, though no additional details surrounding the smaller tablet model were reported. An unnamed industry insider estimates that Inventec will build and ship 3 million tablets for HP in 2011.