Next-day shipping is old news. Now, it's all about hours — or minutes

Bloomberg/Getty Images Forget two-day delivery; major retailers are racing to get your orders out in hours or even minutes. Walmart, Target, Kroger, and Home Depot have all recently stepped up deliveries in three hours or less. US shoppers have shown they want their stuff now — and are willing to pay for it. US shoppers want their stuff faster, and more retailers are responding with delivery options that would have been almost unthinkable a few years ago. Comments this week from Target,…