They may still sell them, but that surprises me because the story is correct, they stopped developing them. Nobody works on the AirPort anymore. They're just selling the last device they had, and it's only a matter of time until they stop. I'm actually surprised they haven't stopped already.
They might still be selling them but it's not wrong that they haven't developed them either.
There hasn't been a new one in over 5 years and while most of their hardware has supported 802.11ac for 3-4 years (iMac since 2014, Retina MacBook Pro since 2013, iPhone/iPad since 2014) their first party wireless router doesn't.
That doesn't mean they're working on the next version.
I used to love my Airports, but the most recent version dropped SNMP support, and the Airport Utility has been dropping features as well. No Quality-of-Service capabilities since its inception, either - my wife's Flickr uploads kill my connection while they run.
https://www.apple.com/airport-express/