No, Apple does not provide an HDMI cable with the Apple TV 4K. The box contains a power cable, Lightning to USB charging cable, Siri Remote and the main Apple TV unit.
Apple TV 4K
In typical fashion, Apple opened pre-orders for several of its upcoming fall products on Friday at 12:01 AM Pacific time. While the initial batch of iPhone 8 pre-orders did not sell out in the first few hours, over the weekend delivery dates have slipped. In fact, now that over two days has passed, shipping times across the board have increased on the device lineup.
Pricing runs $179 for the 32GB model and $199 for 64 GB of on board storage.
The Apple TV 4K supports 2160p resolution output along with Dolby Vision and HDR10. The improved set top box features an A10X fusion chip, Bluetooth 5.0 and HDMI 2.0a.
In comparison, the 4th generation Apple TV with HD video output comes with 32 GB of storage for $149.
The "Apple TV 4K" with 4K HDR video output (UHD resolution) can be pre-ordered on Friday September 15, 2017 starting at 12:01 AM Pacific time. The set top box with Dolby Vision support delivers and arrives in stores on Friday, September 22.
Update: Apple opens pre-orders for the Apple TV 4K on Friday September 15, 2017 at 12:01 AM Pacific time. The device hits stores on Friday, September 22nd.
Reports point to a 5th-generation Apple TV release date before the 2017 holiday season. Look for an Apple TV refresh in the fall, possibly October 2017.