Apparently, Mercedes has logged a clarification about the frame:
http://www.f1analisitecnica.com/2017/01 ... to-un.html
If the letter written clarification from the FIA Ferrari put , according to information gathered by FUnoAnalisiTecnica preview, a spoke in the wheel to RedBull team that will now put his hand in a rather important suspensive systems RB13 2017, there is a 'other letter involving the Anglo Austrian Team, sent to the FIA this time from Mercedes.
Other link: https://translate.google.com/translate? ... rl&act=url