[TYPO3-templavoila] "experimental" status of accessing parent record data

[David Lanier]

In the current documentation for templavoila, near page 11, there is a 
short section on accessing data from the parent record, by using a 
special register.

<TypoScript>
10 = TEXT
10.data = register:tx_templavoila_pi1.parentRec.uid
</TypoScript>

Just before that, there is a note that says that "this feature is 
experimental and can be changed in the future."

What is the likelihood of this feature changing in the future?

Or maybe a more down-to-earth questions is, what is the likelihood that 
the following code will no long work, returning the header field?
<TypoScript>
10 = TEXT
10.data = register:tx_templavoila_pi1.parentRec.header
</TypoScript>

thanks,
-david