Delta was awarded seven weekly frequencies in order to double its daily frequency on the ATL-GRU route. The proposed start date was originally set for December 15th, 2013.
Yesterday (09/11), Delta submitted a HOTRAN (hours of transportation) application before the Brazilian ANAC that sets the start date for a new ATL-GRU on March 1st, 2014.
HOTRAN applications are not slot applications. It's bureaucratic procedure unique to Brazil that involves everything related to aviation infrastructure, including navigation. Slot allocations come before HOTRAN applications.
DL58 763 daily GRU 0025 ATL 0815
DL59 763 daily ATL 2215 GRU 0950+1