Standard Rotation Changes: Once-A-Year Rotation Returns
Wizards of the Coast announced today that Standard will be returning to a once-a-year rotation schedule effective immediately. Wizards had previously changed to a twice-a-year rotation, and this change undoes that. What this means in practice is: Battle for Zendikar and Oath of the Gatewatch will not rotate at Amonkhet release, but instead will rotate with the release of the block after Amonkhet, code-named "Ham." Shadows over Innistrad and Eldritch Moon will also rotate at that same time.
Kaladesh will remain Standard-legal for two years. The motivation behind these changes is to create less churn for players who drop in and out of Standard. Wizards tried something new, listened to feedback, and reverted the changes. Maybe there's still hope for Magic Online: