What are the implications of a new 750GEV particle to current GUTs? in the next couple of months, hopefully the LHC will either confirm or not, a new previously unknown particle at 750GEV based on a diphoton excess. can currently researched GUTs like SU(5), SO(10) etc accommodate a new particle, spin 0 or spin 2, of mass 750 GEV? and if the LHC does confirm a new 750GEV, how would it effect the Higgs hierarchy problem? is there a fine-tuning problem for the Higgs with the scale of new physics occurring at 750GEV? how would the 750GEV particle affect Higgs hierarchy proposed solutions like SUSY and Technicolor?