They have not said we will not have DLC, Wii-ware is going to work with a new compression software and will probably be used for other things aswell like DLC.
The new Pay-to-play is for DLC and Voice chat both have been annouced as comming ot the Wii! But they haven't said one way or the other if Rockband will or will not have DLC so don't jump to conclusions, my guess is it will based on time frame, probably why it took so long ot come out in the first place.They make huge bucks off the DLC compared to the game.
The only concern is if we have enough room to fit all the DLC with the new compression setup, or will they also release some type of additional storage via the SD slot , USB flash drive, or maybe even a USB HD for the download junkies.
GH3 is supose to get DLC still, we are just waiting on Nintendo to get the Wii-ware,Pay-to-play system in place over the next 3-6 months.
Alot will be happening on the Wii to match what the others offer, its a bit late but its comming.