Yes I'm working on the endings now but they are taking a lot of time because there are so many variables to consider and I want the endings to be personalized and meaningful.
The 0.92a update will be posted here in a week and it contains more story content up to Sparkle's "final" decision as well as the lead-up into the Pink Ending (which is the lighthearted ending of the game).
The next update will contain (hopefully) the remainder of the Pink Ending and as much of the Green Ending (which is the "default" ending) as I can get done.