The version on the Pi is 10.3.1 (released Dec 16th 2015), which is not the latest 10.x version (
https://en.wikipedia.org/wiki/Wolfram_M ... on_history)
so I wouldn't count on an 11.x release. But it looks as though the releases have trailed behind the desktop versions in the past(
viewtopic.php?f=94&t=114118), so it's still possible.