TL;DR: Profile headers on the official apps have a new look. You can add up to 5 social links to your profile (but you don't have to if you don't want to). We're still rolling out the feature, so if you haven't gotten access to it yet, you will over the next few weeks.
I don't know where you got the info from that Tweaking.com is still rolling out this feature as you have nothing to do with the site admins.
I've deleted your duplicated post but will leave this one and members can make up their own minds as to the validity of the info in your post.