_SMSTSCurrentActionName is the variable that defines the name of the currently running task sequence step (before it executes). _SMSTSPackageName variable gives the name of the currently running Task Sequence. Since you say what task not what task sequence - I interpreted your question to refer the former.

Natively is there a TS variable that keeps track of what task OSD is executing - maybe something like _SMSTSCurrentTaskName ?

Your close, it's _SMSTSPackageName. See also: http://technet.microsoft.com/en-us/library/bb632442.aspxMy Blog: http://www.petervanderwoude.nl/ Follow me on twitter: pvanderwoude