Amongst today's flurry of updates Apple also updated the AirPort Extreme Base Station and Time Capsule.
They both now feature simultaneous 2.4 GHz and 5 GHz dual-band networking for optimal performance, range and compatibility. An innovative Guest Network feature allows setting up a secondary network for friends and visitors with Internet-only access so you don’t have to hand out your WiFi password.
Time Capsule is available in a 500GB model for $299 and a 1TB model for $499. The AirPort Extreme Base Station is also available immediately for $179.