Springfield lists it as Hellcat (one word).
An excellent pistol. Actually (and to my surprise), I prefer it over the P365.
I have several, with and without manual safety and optic.
I wish the manual safety levers were slightly wider, but that's my big hands.
A significant flaw in the design is that magazines can be inserted backwards. A very bad possibility in the real world.
Can also say that I have witnessed a number of people manage to not be accurate, even with the optic version.