Effective on April 1, 2013, the eligibility limits for chapter 13 increase to $383,175 for unsecured and $1,149,525 for secured. The previous limits were $360,475, unsecured and $1,081,400, secured.
A number of other limits increased as well for example the maximum IRA which can be claimed exempt increased to $1,245,475.
The federal register with the official new amounts can be accessed here.