"Blob emoji" refers to a type of emoji that appears as a simple, rounded shape with a face on it. It is often used to represent different emotions or expressions in digital communication, such as happiness, sadness, or surprise. Full definition
In addition, mobile browser Chrome on Android O received adaptive icons and Google intends to replace its ionic gumdrop blob emojis with circular ones in the latest Android version. (news.softpedia.com)
On a less technical matter, Android also addressed the extinction of the beloved blob emoji in favour of the new hideously generic options shown below. (mobilesyrup.com)
Another exciting change that Android O brings is circular emojis, compared to the plain old gumdrop blob emojis that we've seen in previous versions. (news.softpedia.com)