You may be correct, and sorry if so, but it could also be you're looking at documentation for .NET Framework instead of .NET Core. There are differences, and I vaguely recall the entity framework side of things did have some differences.
Let me know why more specifically you thought what we had was out of date (url to .NET docs and a brief summary of difference from our course), and also let us know the challenge or video url (timestamp if for a video) that shows the specific bit that's different. If there were a few instances, we can start by just having you point out one.
I can then check into this further for you!