Twitter rolled out the new profile design for all the users. You may have received an email from twitter saying
Meet the new you.
Introducing new Twitter web profiles. Now you can add a larger profile photo. Customize your header. Highlight your greatest moment. See all your Tweets, photos, and videos in one place. And find interesting people to follow — faster than ever.
The new profile design actually looks like the Facebook. The new profile picture is bigger so it is advised to upload new bigger photo if you want more clear profile photo. The new profile design allow you to pin a tweet. But remember these are only applicable for those who visit your profile.
So what else is new
Best Tweets: Tweets that have received more engagement will appear slightly larger, so your best content is easy to find.
Filtered Tweets: Now you can choose which timeline to view when checking out other profiles. Select from these options: Tweets, Tweets with photos/videos, or Tweets and replies.