The OnePlus 5 will be detailed on June 20 in an online event, but the company plans to follow that with a couple of local announcements in India and China. The handset will make its India debut on June 22, as revealed by a video teaser. A day earlier, June 21, OnePlus will show it's 5th gen flagship in China. This information came from a poster that reports say was shared by the company on its official Weibo account. Thanks for the tip, Pakshal Porwal!! Source | Via
Source: http://www.gsmarena.com/new_oneplus_5_video_teaser_confirms_june_22_unveiling_for_india_china_launch_date_revealed_as_well-news-25462.php