leaked stuff around the web is saying its coming, i guess they noticed that everyone had a credit card linked to the play store and saw a market, also balance transfer and.... person to person transfer...... which if free could stuff up paypal big time!
http://www.androidpolice.com/2012/1...-soon-to-google-wallet-and-more-new-features/
http://www.androidpolice.com/2012/1...-soon-to-google-wallet-and-more-new-features/