Earlier today, the official Twitter account of Instiz wrote: "Girls' Generation's new album to be released in October".
Along with this tweet was a link to a page that had a realtime countdown timer that ends on Halloween, October 31.
Keep in mind that there have been previous revelations by Instiz that an artist' would be returning on a certain date, only to have it changed by the official label. In the meantime stay tuned to allkpop for potential official news of a Girls' Generation comeback.
[Thanks to everyone who sent this in.]