Plasma 5.5.5 now available
The 5th and final update for KDE's Plasma 5.5.x series is now available to all Chakra users, in anticipation of 5.6 which is expected to be released in a couple of weeks.
Plasma 5.5.5 as usually includes a month's translations and bugfixes, with the authors highlighting the improvements for the lockscreen and user switching.
It should be safe to answer yes to any replacement question by Pacman. If in doubt or if you face another issue in relation to this update, please ask or report it on the related forum section.