The due date for accepting MtGox creditor claims via online submission has past. But creditors may still be able to submit claims via the offline claims method. Please contact the MtGox trustee to confirm. The form is available on the MtGox trustee's claim website.
The claim can be linked with your Kraken account when it is closer to the payout date. The details will be mentioned in here as soon as we have more information.
Read more about the claims process and the benefits of processing your claim through Kraken on our blog: File your MtGox Creditor Claim with Kraken and receive $1MM in free trades!