Warhammer Online Posts Refund FAQ
Warhammer Online will officially sunset tomorrow at 6PM ET, but some players with multi-month subscriptions or overlapping game card time may be eligible for a partial refund. Mythic today posted a new Refund FAQ that offers an extensive explanation of who is eligible for what. Refunds will begin processing on December 18th, 2013, but Mythic also noted that it may take as long as 90 days to process the huge volume of refunds with an added 7-14 days wait to receive any refunds once its been processed.
For now, you can still log in and play Warhammer Online for free until the lights go out for the final time tomorrow night.
Source: Warhammer Online Refund FAQ