Houghton Mifflin Harcourt announced a partnership with a local start-up Isabella Products, which is launching a tabletish color ereader targeted at children in mid-2011. Called the Fable, the seven-inch touchscreen device will use the Android operating system and is expected to sell for between $149 and $179 (plus cellular connection fees). “Several” HMH books will be pre-loaded on the device, and Isabella ceo Matthew Growley says they “have right now four other publishers signed up,” though he would not name them. (That implies, but does not state, that the company is thinking of a proprietary store and/or format. The device […]