FreeBSD 10.0-rc4 for major architectures including amd64, i386, powerpc, and sparc64 architectures has been released with an expectation that it will be the final rc build of the 10.0-release cycle.
The latest release candidate doesn’t bring a lot to the tablet other than tightened default restrictions for the NTPD server, fix for a kernel crash that resulted from a recent Java port update.
Some of the features of the FreeBSD 10.0 include support for ZFS TRIM, support for LZ4 compression, support for L2ARC compression, FUSE file-system support, better handling of 802.11n BAR TX frames and 802.11n options, fixes for SMP/concurrency races, 802.11n TX aggregation, SNMP-friendly pf firewall, NetMap framework that allows for direct-to-hardware IO, support for Up to 65536 routing tables, VPS support, support for Unmapped VMIO buffers; Raspberry Pi; Bhyve BSD hypervisor and other general ARM improvements.
For more read, FreeBSD 10 features.
Find the FreeBSD 10.0-rc4 mailing list announcement here.