I noticed that the next ycombinator round is mentioned as winter 2013 at http://news.ycombinator.com/apply. Is this a typo or is there just the one round this year? Thanks!
That's not a typo. Winter 2012 Passed already. Winter (season) is December through March but for the typical YC term, it is usually January through March (for Winter), hence 2013 for the next YC batch. Summer is the second batch of the year.