Could Navi be coming a bit sooner than we expected? I'll quote directly from the sourced report by Usman Pirzada over at WCCFtech:

"I have been told that AMD’s Navi GPU is at least one whole month behind AMD’s 7nm Ryzen launch, so if the company launches the 3000 series desktop processors at Computex like they are planning to, you should not expect the Navi GPU to land before early August. The most likely candidates for launch during this window are Gamescom and Siggraph. I would personally lean towards Gamescom simply because it is a gaming product and is the more likely candidate but anything can happen with AMD!

Some rumors previously had suggested an October launch, but as of now, AMD is telling its partners to expect the launch exactly a month after the Ryzen 7nm launch."

Paying particular attention to the second paragraph from the quote above, if this report is coming from board partners we will probably start seeing leaked box art and all the fixings from VideoCardz as August nears – if indeed July is the release month for the Ryzen 3000 series CPUs (and come on, how could they pass on a 7/7 launch for the 7nm CPUs?).