It's still early for solid Samsung Galaxy S11 leaks but we're now starting to get a small trickle of them going. First we got word that Samsung will start to test a new 5x periscope telephoto camera for the S11, and now, thanks to a leaked HTML 5 browser test, we get a hint of the Galaxy S11's new display. The device tested in the HTML 5 benchmark uses the SM-G416U model name, which is a placeholder name Samsung uses when testing its unreleased Galaxy S models. It unsurprisingly runs Android 10 but more interestingly, it packs a 20:9 screen aspect, as evidenced by the mock 384x854px...
Source: https://www.gsmarena.com/samsung_galaxy_s11_could_have_a_taller_209_screen-news-39639.php