If you mean handoff between access points then yes, that's been a part of the IEEE 802.11 standard since forever. The only new thing with Passpoint / 802.11u is

If you mean handoff between access points then yes, that's been a part of the IEEE 802.11 standard since forever. The only new thing with Passpoint / 802.11u is that they've added a beacon field that indicates to the STA (mobile device) that it cannot expect Layer2 connectivity between access points. The device will then purge ARP cache, request new DHCP lease, etc during handover. This is slower than good old 802.11 but makes it easier for the operator to build hotspot networks.