That's the thing. It hasn't been updated in over 4 years. It's still on Draft-N, fer cryin' out loud.
Honestly, they should have updated it two years ago with gigabit ethernet and final-N. That's the only reason I haven't bought one yet. I refuse to spend $180 on another AEBS and I won't buy the AExp until it gets gigabit.
Yeah, I know ... first world problems.