It's been rumoured for a long time, but it seems Gaga is close to announcing her second perfume, named Eau De Gaga. The Haus Laboratories have updated their website from the FAME design it has been sporting since summer 2012.
http://www.hauslaboratories.com/#
And this image can be found on the website, hidden. In the URL it says 'Eau De Gaga' as well as 'edg' so that confirms the name.