Herc the Merc has already posted that there will be a lighter aircraft launched Bramos supersonic missile, don't know if it will be ready.

I would not expect the US Navy to develop a super sonic anti-ship missile anytime soon.

The latest Harpoon block is one of if not the very best anti-ship missile in the world. It is not only virtually impossible to detect at launch, it is one of the most difficult missiles to track OTH even with the most modern radar systems. Why replace a missile thought to be at least in the top 3 of its type?

I am starting to think the Brahmos is one of the most overrated missiles produced since the Sunburn. In the end I think the latest Harpoons and latest Exocets kill the Brahmos on the foreign sales markets.   

Yes.

Specific details as to why are mostly classified, but in the US military munitions guide which is not classified the RGM-109E is listed as a weapon that can be utilized in the anti-ship role.

What smaller missiles like the harpoon and exocet lack in speed and warhead size is offset to a large degree by the number of platforms that can carry them.  Big Russian missiles generally need big ships and planes to carry them.  Yes, the are air-launched versions of some of them, but how many can a fighter-sized plane carry?  One perhaps?  Harpoons and exocet type missiles can be carried on pretty much anything your navy owns.  This is especially true of the small missile boats, that typically mount 4-8.  Try putting a sunburn or similiar sized missile on one of those vessels.  You have to design ships around those bigger missiles.  Harpoons and like missiles can be back gitted to anything.  Versatility is the small, subsonic missile's strength.  That's why even Russia still makes them.  Picture a dozen super hornets with 4 harpoons each bearing down on a Chinese task force from 400miles out.  Bye-bye!!  Sovremmny (I don't feel like looking up the proper spelling right now..lol) and sunburn won't save you now!