Seventeen mentioned Heechul and Super Junior in their v app yesterday. I think they said that Heechul praised them a lot for their performance of U. But I'm not sure if there's already a good subbed video of it.
Lol I forgot all about the actual video xD Thanks! I added the video + timestamp. I hope there's english subs soon~
Most recent happenings:
160509- Sukira with Leeteuk, Seungkwan, and DK
160509- Seventeen talking about Heechul, Leeteuk, and Ryeowook during V App @ 11:15 (No Eng Subs)