Ready for some more design tweaks to your Timeline? If not, watch out. Facebook is experimenting with some significant changes that are already showing up for a small number of users -- and may roll out to the masses very soon.

According to ABC News, where a producer's Timeline first revealed the changes Thursday, the new version is a return to tabs. Gone are the thumbnail pictures for "Friends," "Photos" and "Map" (where you see all the places you've checked in or geotagged yourself).

Indeed, the Map is gone altogether from your front page, banished under a tab that says "More."

There's a new "About" tab at the top of the page; click on that and you get all the information you've given the social network about yourself plus your full list of friends. Keep scrolling and you get to Photos, although the Photos tab will take you there faster.

And as Facebook previously announced, the word "subscribers" is being replaced with the Twitter-like term "followers." Your followers number will no longer be shortened once it gets into the tens of thousands.

Here's what a Facebook spokesperson had to say about the changes: "This is a new design Facebook is testing with a small percentage of people to make navigating Timeline even easier."

In November, Facebook began experimenting with another Timeline change: putting all your posts into a single column. That change still hasn't rolled out for the majority of users.

Can you see either of these changes yet? Do they make sense to you? Or should Facebook leave well alone for a while and let us catch our breath? Let us know in the comments.

Image courtesy Flickr, scobleizer, redesign screenshot courtesy ABC News