Acer is planning to launch an Android tablet priced around US$99 early next year,  a person with direct knowledge of the project said. The world's fourth-largest PC maker by shipments hopes to be the first big-brand company to launch a tablet priced to jostle with Chinese white-box tablet makers for consumers in developing countries. At seven inches with a 1024 x 600 resolution screen and 1.2GHz dual-core processor, the so-called Iconia B1 tablet will have somewhat similar specs to Amazon's Kindle Fire and Barnes & Noble's Nook Color.  But Acer plans to undercut those best-selling tablets’ US$139 price tag by offering the Iconia B1...