Apple is replacing a few third generation Apple TVs over wireless networking issues, but instead of announcing a recall program, the company is quietly contacting owners via email. The method Apple is using to alert customers is likely a sign that only a small number of defective Apple TV units were shipped, and not a move to cover up the problem.
Apple swapping out some defective third gen Apple TVs
Emails started showing up in Apple TV owner's inboxes a couple days ago with replacement instructions. Apple plans to ship owners a new Apple TV along with a FedEx return label so they can ship back their defective unit, saving people from doing without during the replacement process.
If you didn't get an email, your third gen Apple TV probably isn't part of the replacement program.