Update July 23: A report about the 16-inch MacBook Pro from the Economic Daily News in Taiwan gives us a release date timeframe and a better idea of pricing. 

Apple is said to be on the verge of bringing a new 16-inch MacBook Pro into its family of laptops. If rumors hold true, the new notebook would have the largest screen of any MacBook Pro since Apple discontinued the 17-inch model back in 2012.
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https://www.laptopmag.com/articles/apple-macbook-pro-16-inch-latest-news