Yes, if you buy it at the beginning of a month. It will go through the end of the following month in the next year. So it is possible to get nearly 13 months on the card.
If you buy it on March 1st, it will go through April 30th of the following year. If you buy it on March 28th, it will still go through April 30th of the following year. In the first case, you're getting 13 months. In the second case, closer to 12.
The TIW web site says the card is valid for one year. Every once in a while, you'll see someone on the boards post that their expiration date was exactly a year from the issue date. While this is rare, there apparently is a difference based on which cast member you get. Check your card when you get it, and ask why if you don't get the 13 months.