We've only just barely finished up competition #3, but it's maybe time to start looking forward to Competition #4 to figure out when it should happen. We've done these things roughly quarterly (every third month) up until now. That seems like a fairly reasonable schedule for most people, and would put Competition #4 in roughly February.
February is probably a relatively good time. The students who are around are not at the end of the semester, where there are killer finals and large projects to do, and there's not a whole lot else going on for most people. In the northern hemisphere, it's too cold to do anything fun outside still…
February may not be particularly great for me, personally (I'm already pretty packed, as far as scheduling goes, for the early part of 2015) so I may or may not be able to join if it happens then, but that shouldn't necessarily be a deal breaker for the rest of you. (And I might still find enough time to join anyway.)