Two links for you:

Bulletin, explaining everything: renewal bulletin

Calendar, with all the dates: renewal calendar

Quick reference of important dates:

NOV 14: preliminary renewals stmts come out
DEC 12: payment is due
JAN 3: renewal overpayments credited to daily account
JAN 3: final renewal statements available
FEB 3: payment due for final rewewal payments & deadline for reporting discrepencies