What do I do now?

I've had one interview to my state school last month. I found out a few days ago I won't get an answer till March now. The deans of the school told us at the interview that we'd hear from them in a month telling us yes, maybe, or no. They said most of us would get the "maybe," which says the final decision on your app. will be made in March. If no "maybe", then some of us would get a no and a few may get a yes. They said they are very conservative with early acceptances in regular decision and give out most of their acceptances in March. At least I avoided the early post-interview rejection haha...I've been told that I'm not in a bad situation with the school, but I don't know...I would much rather have gotten an acceptance now obviously.

So, what do I do now till March? I haven't heard anything from the other schools I have applied to. Should I send updates? Do updates really help?

I'm really banking everything on my state school, which seems to love to reject 1st time applicants so now I'm worried since I have to wait till March. What can I do? Should I send a letter of intent? Is the LOI just to assure them that you will attend their school if accepted?