This new report coincides with Ming-Chi Kuo's claims in February describing an 16-16.5-inch MacBook Pro with an all-new design. He also stated that the 13-inch MacBook Pro would receive a spec bump. This is similar to what Lin reported, suggesting that the 13-inch MacBook Pro and the Retina MacBook Air would get a spec bump around the debut of the new 16-inch MacBook Pro.
Jeff Lin says, "We foresee that Apple will release a new product [at the] Sep'19 Apple event if there's no unexpected development issue." The fall hardware launch would align with Apple's official Fall release of macOS Catalina 10.15.