Previous participation rules did not clarify what would happen if the required information was not provided. However, the modified US regulation clarifies that DV Program applicants will be disqualified if they fail to provide any data (including a valid photo).
This is, in fact, not a major change but could be a hint towards a more strict treatment by the US authorities in the case of minor typographical errors in the original entry. Flawless entry is now more important than ever!