Compared to the page for the 2015 World Cup, which I created for a post titled 2014-2015 Grand Prix, Khanty-Mansiysk (June 2015), the 2017 event has had fewer FIDE announcements leading up to its start. One of the announcements, the 'Final List of Participants' has created far more buzz than I have seen for any of the previous World Cups.
PARTICIPANTS of the WORLD CUP 2017
a) World Champion and World Cup 2015 semi-finalists
01. M. Carlsen (NOR)
02. S. Karjakin (RUS)
03. P. Svidler (RUS)
04. P. Eljanov (UKR)
05. A. Giri (NED)
World Champion Magnus Carlsen and Sergey Karjakin, Carlsen's challenger in the most recent title match, 2016 Carlsen - Karjakin, New York, will both be competing in the forthcoming World Cup. If both players reach the final round of the event, the FIDE rules are not clear about who else qualifies to the next stage of the World Championship, the Candidates tournament. I'll look at this in another post.