facebook Like & share button goes for a little makeover

Facebook yesterday announced in a Blog post about the changes, that are brought in like and share buttons. "In 2010, we introduced the Like button to the world. Together, the Like and Share buttons are viewed over 22 billion times daily across more than 7.5 million websites." it is said in that post.
New changes are clearly visible, Replacing the the thumb with "f" and bring a white on blue design.

                                                                                                                                                                   

Below is a clear and detail view of all the changes made

Image Source- developers.facebook.com