Valerius is correct. According to Burnsaber's guidelines on the status page, the game will be switching to 48 hour hosting on turn 40. We switched to 36 hour hosting on schedule, so I see no reason not to this time as well.
I for one wouldn't mind 48 hours a few turns earlier, as I always appreciate the extra time so that my brain works properly
but I certainly won't be doing an earlier hosting increase unless there is a big majority backing it. And again, I will only not increase the hosting at turn 40 if there is a big majority wishing to stay at 36 hours.
Think everyone is in some sort of war right now, and I wouldn't want to see or hear of anyone making stupid mistakes just because of having to rush their turns
So the game is changing to 48 hours at turn 40 unless there's a sudden surge of feedback on the matter.