Readiness for IPV6

As far as I can tell, neither Foundry Bigiron, nor Cisco 65xx support IPV6 (I could be wrong). While they probably aren't the most popular routers, they are very popular, and im sure plenty of cisco's smaller routers don't support it either. How ready is the 'net to transit to IPV6 in the future? Should everyone be factoring in replacing big routers with IPV6 being the only reason? Just curious on others' opinions on this. --Phil