v1.0 Release Notes

A new contract that gets deployed on top of the eosio.bpay account.
This contract allows the distribution of system fees that flow into it into the hands of the top 21 BPs.

claimrewards

Claim rewards for a block producer.
You must have been producing at the moment that rewards were catalogued in the contract.

void claimrewards( const name owner );

This is part of a larger release, please see the eos system contracts 3.5.0 release notes