I'm only going to say this once: he's still Dick Grayson. This "Rick" bullshit is based on a Bleeding Cool rumour and the events of Titans #25 being conflated. The Bleeding Cool rumour only states he'll stop being called Dick, which makes sense for an amnesiac who would be weirded out by the Richard to Dick jump. He'll just be Richard or Grayson if I had to guess. He's still called Dick Grayson in solicits, both Percy's and Lobdell's; the difference is that Lobdell's refers to him primarily as "Grayson," and only uses Dick Grayson when referring to his full name.
The book's going to **** already, we don't need misinformation making fans look like the dumb ones in the equation.