Yes, that is where it all started, but there is ongoing development of the relational view. For example, in this essay Julian Barbour derives an expression for time in terms of positions:
And here is David Mermin's "Ithaca Interpretation of Quantum Mechanics", otherwise known as the "Zero Worlds" hypothesis (to contrast to the more famous "Many Worlds"), because it is entirely relational:
Just scanning them now, I think they will be very helpful.