This reply is the latest and most accurate information that TurboTax has regarding if your stimulus check will be deposited to your prepaid card. The IRS has the final say as to where the stimulus check will be deposited and until they publish that information it is not possible to provide you with a yes or no answer to your question.
"We are still waiting for IRS guidance regarding updating or providing direct deposit information for the stimulus payments and how they will be distributed to these type of accounts. We will have more information once the government finalizes the details. In the meantime, you can visit the following links for the most recent updates:IRS Coronavirus Tax ReliefTurboTax Corona Virus Tax Center Updates"