http://www.techradar.com/news/samsung-galaxy-a-could-be-the-next-phone-to-get-a-bixby-button

So far Samsung’s Bixby AI assistant has been exclusive to high-end handsets, with both the Samsung Galaxy S8 and Samsung Galaxy Note 8 sporting a dedicated Bixby button to launch the assistant. But it sounds like the assistant and its button could be headed to mid-range handsets too, starting with the next set of Galaxy A phones.

That’s according to a post on Weibo (a Chinese microblogging platform), but the source doesn’t specify whether the whole range will get Bixby, or whether it will just be higher end models like the Samsung Galaxy A5 (2018) and Samsung Galaxy A7 (2018).