The new logo was announced via a blog post, a longer post on Medium from head of design, Ian Spalter, and also a short introductory film.
The kind that is usually intensely annoying, but actually this one is quite cute (warning though: the end has a lot of flashing and intense colours).
The blog post asserts that the “Instagram community has evolved over the past five years from a place to share filtered photos to so much more.
– a global community of interests sharing more than 80m photos and videos every day. Our updated look reflects how vibrant and diverse your storytelling has become.”