Two days ago a rumor broke that Google will be announced an NFC based mobile payment service on Thursday. Now This is my Next got a leaked information from a retailer named The Container Store talking about their participation in Google Wallet. Contactless Payment solution Google Wallet will be launching in a trail this summer.
Google will announce more retail partners for their NFC payment system on Thursday.
As Google is not launching Google Wallet fully, Apple still can beat them to the punch with a roll out of the anticipated Apple NFC payment system. I expect though that Apple's main draw to their NFC solution will be the ease of use and tie-in into iTunes. You already registered a credit card with Apple and you purchase apps and music all the time on your iPhone. It is a very small step to also pay your groceries on the iPhone when it gets an NFC chip. Google already has an NFC phone on the market with the Nexus S.