Gregory's Server
As I hadn't heard that term before, I looked up 'Oregon Trail generation' and got:
>Xennials are a "micro-generation" born between 1977 and 1985. This group has also been called the "Oregon Trail Generation." Xennials may have been hit hardest by the recession because of a combination of student-loan debt, job loss, and other factors.
Wikipedia also has a page for Xennials.
This all seems to have a US bias.