I've been noticing a lot of 3rd blue wave related search traffic - everyone wants to know when. Frankly, no one can answer that. Samsung has been very good at keeping a cap on things, rumours are that even people inside the company are left in the dark.
However, we can look at Samsung's past behaviour. They said they would release an update, and it was released on time - just barely - as in right down to the wire. Since the third Blue Wave was announced for March, I am going to guess that we will not see anything until the very last day of the month (possibly not until the last hour in the time zone for Korea in fact!)
I think everyone is getting anxious just because we have no idea what is coming in this update (again, Samsung seems to be very good keeping its secrets). Until then however, I will be checking for updates on a daily basis.