Merchant Customer Exchange (MCX), a group of large U.S. merchants, said Monday it expects to launch an early version of its CurrentC mobile payment app mid-year in an unnamed, mid-sized market.

The group unveiled CurrentC in September, saying it had already launched the payment service by that time in private pilot mode in select, unnamed locations, with plans for regional and national rollouts in 2015.

MCX wasn’t more specific, other than saying that would take place “mid-year” in an email to Computerworld.”The market will be determined based on a number of factors, including retail support, infrastructure and consumer population,” Scott Rankin, chief operating officer at MCX said in the email.

Red more, via Computerworld.