Two channel or to multi-channel, that is the ???

After reading many sources of material about the debate over DVD-A vs. SACD, and Hybrid discs vs. 2 channel SACD only recordings (Sony).

I still have more questions. Are there any record labels that produce multi-channel only recordings? If I purchase an SCD-1 will it be obsolete because record companies are producing multi-channel only recordings?

Thanks for your input.
Dave