The white papers look ok to my untrained eye. Basically, Bitcoin holders do not have to do anything; the RSK protocol will simply be released and available for anyone to use.
The thing I do not fully understand is whether locking in a Bitcoin to the RSK sidechain and taking it out again comes with Bitcoin fees. If that’s the case, the RSK Network would seem similar to a token not connected to the Bitcoin protocol but pegged price-wise to the Bitcoin price on a 1:1 basis.
The proposed ticker SBTC has already been ursurped by Super Bitcoin (SBTC).
For more about RSK see:
http://www.rsk.co/Exciting times.