http://www.dt.co.kr/contents.html?article_no=2015102702100832794001
According to the latest news from Korea, Snapdragon 820 also suffers from overheating problem just like its predecessor 810. However, the report says that Samsung will use 820 for its Galaxy S7 no matter what it takes to the market because 820 will be produced using Samsung 14nm foundry. You may use Google translation tool for more details..