Nah, Coindesk still does some PR but it must be a really interesting or exclusive because they do receive a lot daily. BTW corruption works in 2018...
Other than that you can advertise with coindesk there are different advertising option, of course, there is a cost
No they not do Press Release (pay to get article promoted) anymore becoz alot of ICO wanted to use it and they shut it down. It also nowhere mentioned anymore. Other options r not good becoz users can adblock these ads.