RAM has a diesel strategy:

http://www.caranddriver.com/reviews/2014-ram-1500-ecodiesel-v-6-first-drive-review

GM has a diesel strategy:

http://news.pickuptrucks.com/2014/04/spied-2015-chevrolet-colorado-duramax-diesel.html

Nissan has a diesel strategy:

http://www.autoblog.com/2013/09/27/nissan-titan-cummins-diesel-originally-meant-for-ram/

Toyota has a diesel strategy:

http://blog.caranddriver.com/toyota-tundra-does-a-titan-move-turns-to-cummins-for-a-diesel-v-8/

And finally Ford’s diesel strategy:

https://www.youtube.com/watch?v=5eSLfgR2vZg