Taking advantage of interest around Apple’s press conference tomorrow, textbook rental company Chegg is wading into the morass of too many proprietary ereading platforms for students with yet another product. Their cloud-based eTextbook Reader is HTML5-based, developed by 3D3R, an engineering team recently acquired by Chegg. The app is currently optimized for iPads and computers, though the company says other platforms are on the way. Their product uses publisher-supplied PDFs, and the company says they have about 40,000 textbooks available from all of the major publishers. (The WSJ says Kno claims about 150,000 titles, with options to either purchase or […]