The 2013 Cubs Convention will be held January 18th through 20th at the Sheridan Towers in Chicago.
Convention weekend passes are now available for $60, plus convenience fees, at http://chicago.cubs.mlb.com/chc/community/convention.jsp.
If you have made reservations at the Sheridan for the Convention, you do not need to buy passes separately now - they will be available for purchase at the Convention for a discounted rate of $20 each.
So far, Starlin Castro, Anthony Rizzo, Brett Jackson and Jeff Samardzija are confirmed and will be joined by "more than 50 current, former and minor league Cubs."