Not at this stage.
If you use UPI to send money to another person or pay a small shop, there is currently no announced new customer fee because of this law change.
Even if MDR is introduced, the proposal is aimed at merchants. Businesses may choose to absorb the cost, although there is also a possibility that some could try to recover it through their prices.
The key point is that UPI is not becoming a paid service for everyone overnight. The government has created room for merchant charges, but the final rules, rates and implementation date are still to be decided.