Today's Rock Band for Wii announcement left us with some lingering questions. Here are Harmonix's answers [update: added answers to Mii support, 480p questions]:

Will the Wii version of Rock Band include the Rock Band Store, and downloadable tracks?
When developing Rock Band for the Wii platform, we focused on making the core gameplay experience as solid and enjoyable as possible while tailoring it specifically to the strengths of the platform. The Wii version still contains the robust four-player band experience and all the fun at the core of other versions of Rock Band. However, because the Wii's online capabilities and potential have yet to be fully realized, we wanted to wait before we explored online functionality for Rock Band to ensure that players get the high-quality of online performance they've come to expect.

Will the Wii "bonus songs" be Wii-exclusive, or five songs included on the disc from the Rock Band DLC store?
We'll announce the songs closer to launch. Stay tuned!

Will the Wii version have missing or crippled features similar to the PS2 experience?

Just as it's impossible to look cool playing a big plastic guitar, it's pretty hard to be taken seriously as a "drummer" when tapping away on an electronic drum machine straight out of an '80s video. Luckily for those who care about looking cool, Otronicon has posted a set of pictorial instructions for turning a real, full size drum kit into a Rock Band-compatible drum controller.

You might think that the real drum would be even worse than that clacky drum controller at drowning out the in-game drum line. Not to worry... just fill your drums with foam to quiet that natural drumming sound. So, to summarize, these instructions let you replace your fake drums with real drums that are working very hard to be fake drums. Just so we're clear.