802.11n on FreeBSD 10.0-RC4

[pbtraveller]

Hi,

I was told that 802.11n code for atheros wifi cards was committed to 
FreeBSD 10.0.

I am currently running a machine with FreeBSD 10.0-RC4 and the following 
wifi card

     vendor     = 'Atheros Communications Inc.'
     device     = 'AR9287 Wireless Network Adapter (PCI-Express)'
     class      = network

I loaded the following modules at boot time by placing the following in 
/boot/loader.conf

     if_ath_load="YES"
     if_ath_pci_load="YES"

When typing ifconfig -v wlan0 list channel I only get

Channel   6 : 2437      MHz 11g ht/40+

and the like but no 11n

my /etc/rc.conf looks like this

...
     create_args_wlan0="wlanmode hostap"
     ifconfig_wlan0="ssid myssid mode 11n up WPA"...

ifconfig shows me that the systems is running 802.11g only

     inet6 fe80::12fe:edff:fe75:3c2b%wlan0 prefixlen 64 tentative 
scopeid 0x5
     nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
     media: IEEE 802.11 Wireless Ethernet autoselect mode 11ng <hostap>
     status: running
     ssid myssid channel 4 (2427 MHz 11g ht/40+) bssid 10:fe:ed:75:3c:2b
     regdomain 32924 country CN indoor ecm authmode WPA2/802.11i

What am I doing wrong or was 802.11n not committed to FreeBSD 10 ?

Many thanks!

pbtraveller