The FreeBSD/ia64 project pages contain information about the FreeBSD port to Intel's IA-64 architecture; officially known as the Intel Itanium® Processor Family (IPF). As with the port itself, these pages are still mostly a work in progress.
The ia64 port is still considered a tier 2 platform. This
boils down to not being fully supported by our security
officer, release engineers and toolchain maintainers. In
practice however the distinction between a tier 1 platform
(which is fully supported) and a tier 2 platform is not as
strict as it seems. In almost all aspects the ia64 port is a
tier 1 platform.
From a developer point of view there's an advantage to have
the ia64 port be a tier 2 platform for a while longer. We still
have a couple of ABI breaking changes in the pipeline and
having to maintain backward compatibility this early in a ports
life is less than ideal.