As you may have heard by now, Game of Thrones has gotten renewed. What's surprising, though, is that it was a double renewal. So the show will go on till at least six seasons.
Meanwhile, no news yet on Book Six, The Winds of Winter in the book series which it's based upon. Although I have a feeling we'll hear something anytime between now and May 29. May 30th is George's first 'major' appearance since about November and I have a feeling that he'll submit the manuscript for The Winds of Winter prior to departure (maybe sooner), with an announcement. Either way, I hope it's going well for him, and that Six and Seven give him minimal issue.