it's a part of additional equipment. If you choose so, you get different bumper (with those "holes" already), though I'm not sure if you want to add DRL later on (on a regular bumper).
I didn't take it, as DRL sits too low, was afraid some road stones would break it rather sooner than later (just one more headache). In that respect, I like new Mazda6 solution better (incorporated into main highlights)..... Guess it will come with CX-5 refresh....
EDIT:
Just spoke to Mazda Vienna, it's not a different bumper, just that plastic "lip" at the bottom of the bumper. Price is 400 EUR
Cheers,
Miki