Users will now be able to re-roll their weekly prize at the cost of Neopoints. This new feature can be found in the form of a small button, located directly above your weekly prize in the Quest Log and can be used at any time.
How it works, you ask? The cost of the re-roll doubles each use, beginning at 10,000 nps, and capping at 1 million. There is no limit to the amount of times you can re-roll your item and it will not show you an item you have previously re-rolled, making it far easier to achieve the item(s) you are seeking. The amount of Neopoints requested to re-roll will reset back to 10,000nps once you complete your final Weekly quest and claim your prize.
For more information about the re-roll feature and more details about last weeks unexpected maintenance, please read this AMA.