Is Ford switching all their vehicles into ecoboost engines?

Why is Ford heavily advertising their Ecoboost engines a lot? I know is suppose to boost up fuel economy and horsepower but they taking out V8 engines. Other Auto companies they refine their V8s and make them fuel efficient or at least increase mpg. Ford is like ditching V8 and put V6 twin turbo to solve their problem quickly to me. Anyone agree?

They will offer the V8's for 2015 in the mustang and the F150

Its advertising simply because the eco boost series is more advanced and offers better overall all round benefits,
V8 is more costly to produce than V6 which now gives same power but better weight saving etc.
so combination of simple economics and fact market for macho stuff ( v8 versus V6 etc) is too small for a mass producer.

Yes but they haven't upgrade those V8 engines, they just carried over from previous model. Chevy upgrade their V8 engines and Chrysler their Hemi with 8 speed auto. Ford hasn't and it seem they don't want to to discourage buyers from buying V8s