If I understand right this would mean it should have been '863xx', wouldn't it? But that would be odd as well as the sentence mentions the "APM86xxx family" separately.
> or that designation could be interpreted as a Titan successor.
Or rather a Gemini successor with either a Titan core or a successor to that core.
> What do you think it is?
It could be a typo of some sort. The other two Applied Micro processor families that are supported by Abatron but are missing in that press release's list are 821xx and 832xx/Gemini. So "836xx" could mean one of those. But I don't know really.