With the new DSi just being announced, it'll allow people to download titles direct to their handheld, kind of like Apple's little doodad, the iPhone. So, in order to share the Point system between the Wii and the handheld, Nintendo will go ahead and rename "Wii Points" to "Nintendo Points," said Satoru Iwata at the Japanese fall press conference.
Will you be able to transfer Points purchased through your Wii to your DSi? We would assume so. We'll update you all as soon as more information is provided.