Great news since the only one who could take Hotch's place, in my opinion, is the ship-jumper Mandy Patinkin. However, I am somewhat confused by the following line in the article since it was my impression that Paget Brewster's character was killed-off, (at least for the season while she attempts a pilot on ABC this fall) and that only JJ would be returning to the show. I can only assume the author was mistaken.
"With Gibson and Shemar Moore set to come back and Paget Brewster and A.J. Cook rejoining them, Joe Mantegna, Matthew Gray Gubler and Kristen Vangsness, Criminal Minds will return in the fall with its post-Mandy Patinkin cast intact."