IDA 6.2 ships 5th of October 2011. As usual, it is free for customers with an active support plan.
Please use this link: https://www.hex-rays.com/updida.shtml to request your update.
Support plan renewals are available during three months after expiration of the support plan. It is also possible to renew support plan before the expiration. In any case the new support period is counted from the expiration date of the previous support period.
Please note that IDA licenses do not expire, only the support period does. Once purchased, IDA can be used for unlimited period of time without any additional payments.
Please check our order forms or contact your reseller.