For now I’m sure you’ve all heard about the new MacOS Big Sur icons which seem to show the return to skeuomorphism. Skeuomorphism is more realistic than flat design and was changed to a more simple flat design over the years. And now Apple is bringing it back which seems to be a backward step but in the same time is a fresh new look.
The design community is split to those who hate it, and to those who love it. There are already a lot of new designs based on flat design with shadows. Here are some for your inspiration.