Anything's possible. What we do know is that among first-time voters, voting for the same party three elections in a row creates about a 90% likelihood of voting that way for life. When you consider that a good bulk of the current Latino electorate first voted in 2008 and the levels at which they've been voting since then are >65% D, then 2016 could definitely be the cycle in which permanent super-majority support status for Democrats among Latinos is permanently solidified - goodbye to the Republican Party getting anywhere near their 2004 share of the vote if that happens.
It is true that, contrary to everything you hear in mass media, people rarely if ever change their minds politically after their late 20's. It extends beyond just Hispanic voters, though. This would seem to be the critical cycle that determines whether the circa 1990 generation stays with the Dems for life like the circa 1920 generation did or reverts back to swing status like the Boomers.