Apparently, the new chicken will be available in dark meat and white meat pieces that will be bereft of bones and skin, but still be breaded and fried in Original Recipe fashion.
As to why you would buy Original Recipe Boneless over strips, the new chicken looks to offer a better meat to breading ratio and is available in dark meat in addition to white meat. The new chicken will cost slightly more than bone-in chicken and like the rest of KFC's menu are actual cuts of chicken.
Starting April 14, the new chicken will be offered in a two-piece Boneless Combo for $4.99. The combo includes a piece of dark meat boneless chicken, a piece of white meat boneless chicken, an individual side item, a biscuit, and a medium drink.
KFC is going with a bit of a weird tagline to promote the new chicken: "I ate the bones!" The concept is that people will be so engrossed in eating the chicken that they'll think and exclaim afterwards that they ate the bones, not realizing the chicken was boneless. They're hoping the tagline will go viral. Let's just hope the chicken is good.