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To spark your curiosity, former SM Entertainment trainee Jino and former YG Entertainment trainee Yang Hong Suk have been spotted on a recent Instagram post by Cube Tree, or Cube Entertainment's Cube Artist Development Department Team! 

It's been widespread news among Cube fans that the label is hard in the preparation stages for a new, 10-member boy group named Pentagon. Now, many are linking the two very familiar faces with the upcoming boy group, set to debut either by the end of 2016 or early 2017. 

Cube trainee Kim Hyojong, who promoted with HyunA for her "Roll Deep" promotions, is also speculated to be a part of the upcoming group. 

If you're curious about upcoming boy group Pentagon, or Cube Tree in general, follow their official Instagram below! 

12? ?! ??? 17?! ??? #??????? ??? ?????? ?????! #JJH #YHS #????? . Today is CUBE's trainee day! r u guys ready ? Lets all cheer for JJH&YHS! And who will be the next? Pls follow this account to meet more trainees here. . ???17?! #CUBE????? ?????CUBE???! . #???? #???????? #????? #cubetree #cube #cubetraining #cubetrainee #cubeentertainment #cubeent #cube????#cube???#cube????? #cube?????#???

A photo posted by CUBE ????? (@cube.tree) on Mar 16, 2016 at 8:00am PDT