when ''THE GAME'' will be release?

Hey!! I backed the game on Kickstarter about a year ago, and I'm super glad that it's finally out!! I just finished Alexis' route for the first time and it was great! Though I noticed that when I went to go check the gallery, I immediately received the achievement for unlocking every image in the gallery when I had only unlocked ~5. It isn't a major thing, but I thought I'd mention it. Thank you for all of your hard work on the game!...

Will they be different depending on gender selection or will it just be the heroine in the image (like how Huniepop did it for example)

I know it says Q1 2019 but I don't know what that means.

I noticed there was a new achievement when I looked at the game called "Starting Over." However, I've played all the routes and can't find any guides for it, and the unlock rate is currently at 0%. Is it meant to be a hint to clear the save files?