Not sure how close they're going to be to suicide squad from a story perspective beyond what is set up in the trailer. In the comics, Creature Commandos are a different program from Task Force X, initially run by the army in WWII, Frankenstein & The Bride work for a government organization named S.H.A.D.E. (Super Human Advanced Defense Executive) and G.I. Robot was a third seperate WWII Era project.
So they may be using Waller and the Suicide Squad concept to give a single hook that audiences already know to throw the characters together.