Correction:
The keyboard can be set to English (US), BUT, the Region must be USA. It is not currently available in other countries regardless of the K/B language used. It's a location issue (right now) not, a language issue.
Cheers,
Drew

No, that is not true. I am living in Germany and so I have German Region enabled. To be sure, I just checked that.
However, when I change my keyboard to US English then the Emoji board shows up - even with German region settings. It doesn't show up when I switch back to German keyboard.
This works in all applications, not only in online-applications like Twitter or others as someone mentioned here. I just tested this within Thunderbird and even in Notepad++
Rüdiger
