Retailers predict shoppers will scoop up 8-ft. TVs this holiday season. Here’s why

Analysts credit the emerging demand to improved technology and much lower prices.

For some television viewers, size apparently does matter.

Forget the 65-inch TVs that were considered bigger than average a decade ago. In time for the holidays, manufacturers and retailers are rolling out more XXL screens measuring more than eight-feet across. That’s wider than a standard three-seat sofa or a king-size bed.

Supersize televisions only accounted for 1.7% of revenue from all...