Phraseology?
None standard perhaps, but some I have heard (mil controllers)
After limiting for SSR only: "Gadget sweet, full service resumes."
Edge of radar cover: "Now in solid cover, Radar Information Service."
Statements such as "height block surface to ten thousand, limited below five thousand FIS below 3 thousand" and "Service limited for next ten miles due my overhead" mean the limitations are self-lifting.
In answer to the original question, though, yes I believe you should be made aware when the limitation is lifted.
STH