There is a good article from Max Bultman regarding several red Wings Prospects. It sounds like Pellikka still has a way to go but Johannson may be closer to pushing for a roster spot. I'm also trying to crosspost this into the NHL community since it seems to be pretty quiet in team communities during the summer.
If you don't have a subscription you should be able to read the article through https://archive.fo/
Also trying to see if this comment shows up in the Red Wings community that I posted to.