It is still one.  The [Wiki](https://minecraft.wiki/w/Stronghold) states that for console versions there are only one:

>There is a limit of 128 strongholds per world (1 per world in Console Edition).

Another [forum](https://www.gamefaqs.com/boards/718567-minecraft-xbox-one-edition/70739807) confirms this (although the asker on that forum seems to not believe the person who answered despite their evidence).