Not much, apart from Koeman saying yesterday that he wants 1 or 2 more, specifically a wide player.
Links seem to be pointing towards a utility RM/RB from Lazio (Alvaro Gonzalez), not any real concrete wide man links as yet though.
But it looks as if the priority is a winger, and the 2nd signing will probably be more of a bonus or anything - not as urgent, but RB cover.