It's taking me so long because I'm working hard every day to add more content! This new update also gives a Neil's and Dimitri's route a slight facelift because there's a new phone message system that's been coded. That means any text conversations in previous routes have been uppated to reflect the new system.
Viewing post in Caine's release on March 25 comments
Gray, previously named Sam, was renamed due to similarities between another otome game who had similar named characters. Through polls, Gray was the most popular vote. He was going to get a rework, including a sprite redesign and overhaul of his storyline, much like how James had his route redesigned.
So Gray is just Sam in a new jacket.