Facebook has created a personalized video to celebrate their 10th anniversary. Zuckerberg & Co. decided a "Look Back" compilation of your most-liked photos set to music would be fitting for the anniversary.
A notification will be sent to your account pointing to a video will be waiting for you.
Go to https://facebook.com/lookback/ to find your facebook moments made into a timeless memory video montage.
Facebook Made You a Sentimental Video to Celebrate Its 10th Birthday - Gizmodo