For too long, the 21.5-inch iMac lacked a Retina display, but that could change as soon as next Tuesday. Apple is said to be announcing a new 4K iMac next week, with availability beginning as early as Oct. 13.

Apple’s revamped set-top box Apple TV is available for pre-order Monday, with the first shipments rolling out as soon as this week.

The device starts at $149 for the 32 GB model, while the 64 GB model costs $199. According to Apple’s website, pre-orders made today will ship in 3 to 5 business days.

Apple unveiled the long-rumored set-top box during last month’s iPhone event in San Francisco. The device includes a faster processor, a simpler interface modeled after Apple’s mobile devices and a new remote with touchpad. Apple TV also supports Siri, allowing users to issue voice commands.

One of the more interesting features in Apple TV is a universal search combing through all apps such as Netflix, Hulu and HBO for the entertainment content users want.

The new Apple TV arrives in an increasingly competitive market for streaming devices, including Roku, Google’s Chromecast and Amazon’s Fire TV devices.

Follow Brett Molina on Twitter: @brettmolina23.

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