Via Wikipedia, the IPv4 well has run dry, as expected:

IANA’s primary address pool was exhausted on February 3, 2011 when the last 5 blocks were allocated to the 5 RIRs. Several RIRs are expected to run out of IPv4 addresses before the end of 2011; once the first RIR has run out, the end-to-end routable IPv4 Internet will be officially obsolete.

IPv6 deployment has been slow, but will be ready to meet future addressing needs.