ABI Research has forecast an UltraHD STB market size of 7 million units this year – up from 2 million last year – followed by annual growth of 46% to 2021. Despite this rise, the overall STB market is on the decline; ABI expects a 9% YoY value drop this year, to sub-$16 billion. Although hardware revenues will fall, ABI expects software and services to remain an opportunity. The firm also predicted that India, which overtook the USA as the second-largest STB market last year, will overtake market leader China in 2018 or 2019.