By now the upcoming Galaxy S8 has leaked so much that there's little left that we do not know. But all those rumors are a bit of a mess, so a few days ahead of the official unveiling, we thought it would be helpful to make a clear summary of what's to come. 2 versions There's no more "edge", both versions will have a dual-curved screen. The difference in size remains 0.4" between them, but the new models have bigger screens - 5.8" on the "small" Galaxy S8 and 6.2" on the bigger Galaxy S8+. No bezels The Super AMOLED screen has grown wider - 18.5:9 aspect ratio instead of 16:9....
Source: http://www.gsmarena.com/samsung_galaxy_s8_what_we_know_so_far-news-24210.php