Apparently SJ has been scheduled to guest a new variety/reality(?) show "Strongest Group" (translated from the Chinese title 最强天团) I'm not sure if it is a Chinese or Korean one because the MCs includes Jun HyunMoo (Korean MC), Pengyu (彭宇, MC in China), Zhoumi & f(x)'s Victoria.
Filming supposedly starts tomorrow and Super Junior's Heechul, Kangin, Shindong, Sungmin, Eunhyuk, Donghae, Ryeowook & Kyuhyun are stated to be the guests for the first episode.
This picture was posted on weibo by Pengyu (the MC from China):
All the above information were either translated from the picture above.
No Siwon again