as OS 5 hasn't been officially released yet, we only have poor early betas to go off.
Basically they will look similiar, but 5 will likely come with enhancements to the programs, etc.
Its just like any OS upgrade, it just happens to be a 5 instead of a 4.x
"That's it then. Cancel the kitchen scraps for lepers and orphans, no more merciful beheadings... and call off Christmas."