QT : Release Identifier : 1903 {Insider/Preview} MRP: Note: Insider Build detected. Reboot IS required for any project themes to work correctly. That is because the QT & MRP have Insider detection routines. The new QT has more checks which can trigger the new information section, as m$ have dropped the Insider/Preview name from the Edition name within the builds, i have to look in various other areas of the registry to work out if it is an insider build. May not be 100% perfect but it more than it was before. Plus you don't have to be signed in as an insider because most of the data is present within the registry only on Insider builds. But to show the 'extra' information the computer does need to be signed into the Insider account and only then do the other areas get populated within the registry such as which 'Ring' you are on etc.