Austin City Limits Festival came to an agreement with the Austin Parks and Recreation Department on Tuesday to expand the grass-thrashing, mud-inducing festival across two weekends in 2013.

Aware of the damage the Festival can inflict, event producer C3 Presents gives back in return for its long-time home at Zilker Park: It has provided $6 million for improvements to various city parks since 2006.

While the two-weekend format will clearly allow more fans to purchase tickets before they sell out, perhaps the biggest advantage of ACL's restructuring will be the substantial increase in economic impact.

An official press release states: "The 2011 festival infused an estimated $106 million into the Austin economy over three days, with 59 percent of attendees visiting Austin for the event." Imagine that doubled. C3's commitment to Austin Parks and Rec will increase accordingly.

Whether less tickets will be sold across both weekends is yet to be known; however, the two lineups scheduled for October 4 - 6 and 11 - 13 are expected to be almost identical.