Google (GOOG) and vendor partner Asus are reportedly planning to launch their next-generation Nexus 7 tablet in or around this coming July. The news comes on Tuesday from Reuters, which claims the new device will be powered by a Snapdragon processor. The report also states that Google is aiming to ship 8 million Nexus tablets in the second half of the year, which is a goal that could be quite attainable if the company’s second-generation Nexus 7 slate is sold for just $149, as Reuters’ unnamed source says it may be. Earlier reports suggested that Google’s next tablet will be called the Nexus 7.7 and will ship with a display panel close to the size of Apple’s (AAPL) iPad mini display.