While this is another fairly small update, which has been carried over from an existing Adobe application, it’s good to see Adobe taking strides to try and improve Photoshop's type and layout capabilities – much like it did with the variable type update in CC18.
The image will automatically fall into the frame, and like with InDesign, you are given the option to scale the image inside of it, plus markers to indicate the size of the image within the frame itself. To do this, simply create a frame, and then drag an existing image into it. You can also convert any bespoke shape or text into image frames. Using the Frame Tool ( K), you can quickly create a rectangle, or circular frame that acts as a placeholder for images. Mirroring a feature which already appears within InDesign CC, you can now easily mask images by placing them into frames.