Code references found in the X iOS app now show a button that appears as a broken heart icon next to X’s heart-shaped “like” button as well as direct references to a “downvote” feature.

Researcher Jane Manchun Wong, who has revealed numerous features from social media sites by digging into their code, tweeted a photo of the edit button ... an ‘edited’ icon will show up ...

Twitter's "favorite" button just got a makeover. The company announced Tuesday that it is switching out the "star" icon for a "heart," which will signify a "like" rather than a "favorite." ...