Yesterday Tahereh Mafi uploaded a video on her youtube channel revealing the title of Shatter Me book two, which is Unravel Me. I'm still not quite sure how I feel about the title itself (for me it gets time to get used to a new title in a series... yeah, I'm that weird). She also said the release date has been pushed back to February, which is devastatingly sad but I absolutely respect her decision, and she also said it's because of... well, things she couldn't reveal yet.
So now all that's left is waiting! Until then I have more time to reread the book many times and love it, and adore it, and cuddle it more every time I do.