Square Enix will be allowing people to log in free from January 11 – 13, 2014. It looks like they’ll be celebrating patch 2.1.

From the press release:

    Square Enix Ltd., publishers of SQUARE ENIX® interactive entertainment products in Europe and PAL territories, are pleased to announce a Free Login Weekend for FINAL FANTASY® XIV: A REALM REBORN™ this coming weekend.

    With the release of A REALM AWOKEN, the Patch 2.1 update, myriad new adventures await in the realm of Eorzea. Whether you choose to brave the Labyrinth of the Ancients—the new 24-man raid—confront the primals in new extreme encounters, test your mettle against your fellow adventurers in the Wolves’ Den, or work with the Scions in thwarting the Ascians and their dark schemes, there is much to do in the newly awoken realm of Eorzea.

    With so many additions and refinements to the game, we’re excited to have as many players as possible experience all that FFXIV: ARR has to offer. To that end, we’ve decided to host a Free Login Weekend! If you or any of your friends have purchased Version 1.0 and have yet to play—or are simply taking a break from—FFXIV: ARR, you won’t want to miss out on this limited-time event!

    Users who meet the following requirements will be able to play FINAL FANTASY XIV: A Realm Reborn for free this coming weekend:

    Users who have previously purchased and registered FINAL FANTASY XIV and whose service account is set as inactive during the campaign period.
    *Please visit the “FINAL FANTASY XIV: Mog Station” to confirm the status of your service account.

    Event Schedule
    From Saturday, January 11, 2014 at 08:00 (GMT) to Monday, January 13, 2014 at 08:00 (GMT)

    Don’t miss out on this chance to experience all of the new additions and changes to Eorzea!

    FINAL FANTASY XIV: A Realm Reborn is available now on the PlayStation®3 system and Windows PC and comes to PlayStation 4, April, 2014. A free 30-day trial is included for new accounts, with monthly subscriptions starting at £7.69 / 10.99 €.