Typically, I've got a set of actions planned for one turn by the time I turn in the DO for the previous, simply because I've always got more to do than time to do it in, and one turn's actions usually set up what needs to be done in the next turn. I always try to keep at least one or two slots open for "surprise" items that appear, and almost always have to radically revise it during the next turn before submitting it, but there just aren't enough actions in a season for me to get everything done that I want to.