Talking about George RR Martin, his "Tuf Voyaging" series is pretty nice, ironical and logically complete, but his "Song of Ice and Fire", is pure overvalued commercial work, and I'm not sure it should be finished at all. Say nothing about TV-adaptation, that totally ruined the work.I think the last Safehold book was 5 years ago.
An unfortunate trend with sci-fi and fantasy authors is starting a series and not finishing. Weber, George RR Martin, Patrick Rothfuss, Robert Jordan (although dying is a valid excuse in his case lol).