Google is looking at making some changes to the way they handle finances in the Play Store. According to emails sent to developers, payouts are shifting from two days after the end of each month to 15 days. According to the email,
We are committed to providing you with a consistent and reliable payout experience while we introduce new forms of payment to better serve your users and create more revenue opportunities for you. These changes will allow us to ensure users can buy your apps and we can transmit payments to you in a reliable fashion.
We can’t really be sure what new forms of payment will be available, but there’s talk of more Google Wallet and other contractless payment options in the works.