Last year - new stuff in 4.0 and 4.1

Multiple, independent routing tables
pf(4) acts as selector
policy routing
route-to on steroids

Rapid Spanning Tree Protocol (RSTP) support in brigde(4)

ripd - RIPv2 routing daemon
a replacement for the old and cumbersome routed
based on ospfd (3-process, libevent based)

hoststated(8)
a layer 3 and layer 7 server load balancing daemon