Following today's announcement Apple has quietly dropped the iPod Hi-Fi from its line-up of iPod accessories.
Searching for the Hi-Fi on Apple's online store yields no results, while the direct purchase link returns a message that "The item you have selected is currently not available from the Apple Store. Please note that Apple cannot guarantee availability of any product."
On the other hand Apple has updated the iPod nano armband to accommodate today's refreshed iPod nano.