Myce managed to get 2 new Windows Threshold screenshots, one shows the new start menu, the other shows the windowed apps.
The build pictured in the screenshots, build 9795, was compiled on July 13th and is part of the uip_dev feature build lab (FBL). UIP stands for User Interface & Platform so it is basically just the team responsible for UX changes like the start menu and windowed apps plus some under the hood kernel changes.
You may notice that this build doesn’t include the Modern UI titlebars previously rumoured by Neowin, that is because different features are built in different FBLs, once a feature is stable enough it gets merged into the Winmain branch and then back into the different FBL branches. Uip_dev is not the only lab where the stuff like windowed apps is being worked on, the new titlebars are quite jerky in some of the current builds, that also applies to current uip_dev builds which for now resort to the regular titlebar until the proposed modern titlebar functionality gets a bit more fine tuned.
Although we have faith that these screenshots are indeed legit, it is always a good idea to take this kind of news with a grain of salt.