Hi there,
Yup, as far as I know, you heard right.
There is NO temperature corrective added. My company uses a table for these corections and then adds this to all relevant altitudes...ie..platform, minimums etc.
We were told to inform atc of the corrected altitudes.
Have not actually got to try it yet, but thatīs what it says in our manuals.
Hope this helps.
Ciao
Stierado