Wal-Mart Stores will focus on expanding its smaller concepts this year, including the Neighborhood Market and Walmart Express chains, a convenience format called Walmart to Go and online grocery pickup that will launch in Arkansas, company officials say. Wal-Mart will look to technology to improve the customer experience at the smaller-format stores, which the retailer will open at a faster rate than its larger-format stores this year. Read the Supermarket News story here