Apple is likely to launch a computerized wristwatch this fall that includes more than 10 sensors to take health measurements and other data, according to a published report.The Wall Street Journal also said Friday that Apple Inc. is planning multiple screen sizes for the device, which some people have dubbed the iWatch. Samsung, Sony, Qualcomm and others have already released smartwatches, but the gadgets have mostly functioned as companions to smartphones, offering email notifications, clock functions and the like. Samsung’s Gear 2 line, released this year, added fitness-related apps and has a heart rate sensor.