Starting with a series of concert videos originally shot in standard definition, including the Bee Gees, Rolling Stones, and Pink Floyd, these BRs will be from SD source material, upconverted with lossless audio. They'll be identified on the cover as "SD Blu-ray."
IMO, this is a good development and could start to open the floodgates for more SD content for TV series, etc. that were originally shot in SD. Then we could have lengthy series taking up much less shelf space.