There’s a saying: the more things change, the more they stay the same. Several years ago, we published one of the first tutorials on a new proposed standard for embedded instruments, IEEE P1687, perhaps better known as Internal JTAG (IJTAG). When we published a first edition of our IJTAG tutorial, there was a ‘P’ associated with ‘1687,’ because the proposed standard was still being developed and the document was considered a project draft. Hence the ‘P.’ Now that the project has secured recommendation from the IEEE-SA Standards Review Committee (RevCom), we’ve taken a major step toward removing the ‘P,’ requiring only IEEE-SA Standards Board action to be finally approved. In any event, the timing of a new and completely revised IJTAG Tutorial based on the latest changes and updates in the final draft document is opportune, to say the least.