In reply to Din vs Din Next and Trade Gothic vs Trade Gothic Next:
“The new typeface’s refinements included special rethinking of details such as the letters’ terminals and stroke endings, as well as the fonts’ spacing and the kerning.” (http://www.linotype.com/5737/tradegothicnext.html)
“Many additional features were added into the typeface during the design process. Each font includes small caps and oldstyle figures. There are also a number of alternates”. (http://www.linotype.com/5798/dinnext.html)