Will the new jobs, including Dark Knight, be able to access 2.0 50 level content?

For instance, you've put the NIN 90ilvl "Koga" despite it not being part of the necessary progress required for NIN to catch up to the 2.4 content. Does it mean that someone has to the option to do the same thing with Dark Knight? Like getting the 2.0 relic version of Dark Knight?