The IETF IPv6 and IPv6 Maintenance working groups have started the process to advance the core IPv6 specifications to the last step in the IETF standardization process (e.g., Standard). IETF protocols are elevated to the Internet Standard level when significant implementation and successful operational experience has been obtained. Vendors with IPv6 products are encouraged to participate in this process by identifying their IPv6-enabled products by means of this web page.
Check IPv6 RFCs Status here.