I share Glenn Fleishman's disappointment with this week's announcement by the Wi-Fi Alliance that they have only begun their certification testing. But judging from what I've seen so far, getting draft 11n gear up to spec is going to be a long, difficult process.
I spent a few days last week testing a D-Link DIR-655 router and DWA-652 Cardbus card, which are based on Atheros XSPAN silicon. These are the first products to have firmware and drivers posted that allegedly implement 11n Draft 2.0 compliance. My primary focus was to see whether the legacy protection mechanisms added in 802.11n Draft 2.0 were working in actual product.