Thread:User talk:MGalloway (WMF)/extension:beta features

hi where can i get the extension for beta features please. i would like to know what extension is this File:LabsScreenshot.png if you look at the top it little pictures along the navagation i would like to try out that extension please. I was told to ask here by the help desk due to they not know if it is a mock or something else and they say you uploaded the photo.