Twitter recently announced new changes to profiles.
The most significant change is that they’ve added header images, like Facebook but without the limitations. The header image also serves as a backdrop for your Twitter account information including: profile picture, username, Twitter account name, Twitter bio, location and web link.
Ideally, the header image should be 1252×626 pixels, with a max file size of 5MB for optimal viewing across all devices. The font will be white so it is a good idea to choose a darker image. Twitter will automatically shade the lower part of your image. A darker image will make your bio stand out.
This is a great opportunity to get more visually creative with your Twitter feed and really show what your brand and feed is all about.