NEW DELHI, Jan 31 – After showcasing wildlife and culture, Assam tourism is all set to focus on river tourism. The biggest and most modern cruise liner is being launched next month. Briefing newsmen, State principal secretary, Himanshu Shekhar Das announced this adding that the cruise ship has already reached Guwahati. The principal secretary was briefing newsmen on the eve of the inauguration of the 26th Surajkund Craft Mela, where Assam is the Theme State this year.