Facebook is planning to increase the profile pic size for Pages to 160x160px sometime later this week.
Previously, the profile pics for pages were displayed as 125×125 px. This change will affect mainly those pages, which took the advantage of fitting their cover image and profile pic into a clever position.
We have created this image for better comprehension of how to resize your profile picture. the profile picure file still has to be uploaded in the 180×180 px size. Facebook will then resize it to fit the 160×160 square.