macbook atheros driver in 7-beta2

hi, i have just put 7-beta2 on a macbook (core 2 duo)

i am looking for advice on the best alternative for wireless support,
the provided ath driver does not provide support.

sam leffler has a patch here

http://people.freebsd.org/~sam/ath_hal-20070428.tgz

but i am not sure if this is newer or older than the support in
7-beta2

i also see some people are using ndis wrappers with this windows
driver:

http://www.dlink.com/products/support.asp?pid=489&sec=0

does anyone have a suggestion for the preferred course of action?

is there any chance of the atheros support being updated prior to
launch or is the featureset frozen?

thanks
brad