From just having gone through the process
Good luck to everyone
If you are low on the list, expect to start roughly a year from Submitting Date
If you are a little higher expect 1.5 years (i was in the 400's i fell in here)
For those of you who just got letters expect an agility test spring/early summer, a psych & medical in the fall, as well as an investigation
Obviously if you are higher or very high expect a little sooner and vise versa for those of you lower
If you mess up on your investigation, miss/forget/mess up paperwork, move without notifying, lie, cheat, etc. etc. push out your time or expect to be removed from the process. Look at prior posters, if you are not on top of your paperwork/investigation they will skip over you, you are replaceable with the next few hundred people in line.
If you do what you're told, do what you have to do, listen & follow directions, keep your head down ears open & mouth shut you will all be fine & will have a nice easy process.
Be patient, if you really want it, you go through the steps its more tedious than anything.
Again good luck to everyone.
And fyi they are still calling from the 2012 list, an academy is starting in april-ish