This (premiums) is addressed in the Federal Register publication of the final rule today. They are keeping that section of Q (as well as the definition of interest) and moving it to part 330.
In this case, "they" are the FDIC, and their Part 330 retention of the definition of interest and the exception for premiums is meant only to be able to define what a noninterst-bearing transaction account is for FDIC unlimited coverage.
The effect is that you won't want to provide incentive payments for non-interest bearing (traditional) DDA accounts, because it can affect the ability of the customer to have unlimited insurance coverage.
The Fed announced its final rule removing Regulation Q today. It will also be effective 7/21/11.