Redbox and Warner Bros. were at odds in January when Warner wanted to extend the window before discs hit kiosks to 56 days, but now the two have come to an agreement that keeps it at a 28 day delay. When their previous deal expired Redbox said it would find other ways to obtain discs and offer them day and date to its customers, although actually finding them in kiosks could be tough. The new two-year deal covers movies that debut after January 1st, 2013, and claims to improve economics for both Warner (which has apparently seen fit to eliminate the delay entirely for brick & mortar renters) and Redbox.
Engadget , Warner, Redbox agree to 28 day delay on disc rentals, UltraViolet support for Redbox Instant
See also:
at2359, Warner, Redbox agree to 28 day delay on disc rentals, UltraViolet support for Redbox Instant