Two logos were registered this past December.
According to the Japanese Patent Office, Nintendo registered the names and logos for "Nintendo V-Pocket" and "PCGP." The latter of the two was done with Game Freak, the developer of the Pokemon franchise, but it has yet to be confirmed if this has anything to do with another inception of the popular series.
As for V-Pocket, speculators think it may have to do with the DS, as the logos for the two are surprisingly similar. Details are scarce at this time, but all questions will surely be answered in the coming months.