Facebook has offered photo sharing in one form another since shortly after the site's launch, but while certain features have been added over the years, such as tagging and downloads, image formatting has remained mostly unchanged. Until today. Facebook has announced that it will roll out a new tool for thumbing through galleries across the site, presenting photos in a new square format with the option to "highlight" certain shots to increase their footprint on the page. Google+ users may recognize the format, which bears some resemblance to the tool on that site. We haven't seen the feature go live on Facebook just yet, but eager social networkers can preview it today at the source link below.