The sequel to Samsung’s wildly popular Galaxy S II will launch in April. ZDNet Korea claims to have confirmed the time frame with Cheil Worldwide, Samsung’s marketing and advertising agency. The firm is reportedly planning a huge campaign in the United Kingdom, one of the Galaxy S III’s initial launch markets, and the focus of the ad blitz will be this year’s Summer Olympics, which will take place in London. An earlier report from an industry insider also pegged April as the launch month for Samsung’s highly anticipated next flagship smartphone. BGR exclusively published full specs for the Galaxy S III earlier this week, and highlights include a 4.8-inch 1080p high-definition display, a 1.5GHz quad-core Samsung Exynos processor, an 8-megapixel rear camera, a 2-megapixel front-facing camera, a ceramic case, embedded 4G LTE and Android 4.0 Ice Cream Sandwich.