Tumblr announced on Monday that all blogs as well as the Tumblr Dashboard will be unavailable for a “few hours” on Saturday October 6, starting at 4:00AM EST (1:00AM PST). The company explained this was a required move as the microblogging platform, which serves billions of impressions for its 150 million users, attempts to further improve performance. Blake Matheny, VP Engineering at Tumblr, called the notice “bittersweet news” before giving up the details of what exactly will happen next weekend: “We are now ready to complete the last major step in upgrading our infrastructure.” Read the full story at The Next Web.