Just curious, Thanks, Bill

For the most part, no.  The new bayonet has replaced both the old bayonet and the ka-bar.





ETA:









 

That picture somewhat supports what I have heard as far as that the USMC essentially modified the KA-BAR into a bayonet, which is what that picture seems to show

Pretty much, although it's not made by Ka-bar, even though it looks like one; it's made by Ontario Knife Company in New York.





I'm not too familiar with the history of this bayonet, but it seems Systems Command's intent was to combine the fighting knife with the bayonet.





Traditional ka-bars might still get issued to those Marines who are only issued an M9 (and therefore wouldn't need a bayonet), but nowadays it's rare for anyone to deploy without an M16 or M4.



Someone with more recent deployment experience can chime in.  I was issued the old bayonet and a ka-bar when I deployed to Iraq in 2005.