Many, I would be tempted to say most, manufacturers make unannounced incremental improvements to their product. It is only when a new product differs significantly from the older one when such a change is announced. Kodak cannot be faulted anymore than say Ilford. When a signmificant change was made to Ilford's films they added "Plus" to the name. Kodak's name change is exactly equivalent. When in doubt as to film processing it is a good idea to always check the manufacturer's instructions. Independent data like the MDC are usually not up to date and the site is known to contain errors.