For those not familiar, with the cancelation of E3, a new initiative by Game Awards creator Geoff Keighly manifested itself as Summer Game Fest, a four-month-long celebration of games, set to conclude in August most likely with gamescom's Opening Night Live event. One of the goals of this initiative, as you may glean from the title, is to showcase games of all kinds, which in many instances also means that playable demos will be available to try. That's exactly what's happening here.
Between July 21 and 27, folks on Xbox One will be able to try out "more than 60 brand-new game demos for upcoming, unreleased Xbox games", a number which is said to rise to anywhere between 75 to 100 titles in total. These demos will of course be available for free, but only during the aforementioned week, and will be accessible via the Game Fest Demo tile on the Xbox One Dashboard. Among the games you'll be able to try are ones which have released demos on other platforms earlier in the year, like Cris Tales and THQ Nordic's Destory All Humans! remake, as well as titles such as SkateBird. Emphasis is being put on that these demos possibly being a bit rough around the edges, akin to show floor demos, but feedback is encouraged.
This demo showcase is likely not part of the Xbox 20/20 push - the last of which was in May -, whereby Microsoft aims to share news about next-gen in the run-up to the launch of Series X - and potentially Lockhart. The date for that particular event, which is heavily first-party focused, hasn't been revealed just yet. Thankfully, as per Phil Spencer, there won't be any webcams present, but feel free to discuss the possible content we might see via the forums.