As you may have noticed in our release history, the EXTENDED STRING data type was removed almost a year ago. To be precise, it was more a merge of the STRING and EXTENDED STRING data than the removal of the latter. This means now you can safely use STRING data type for any kind of characters (including emojis??) without worrying if the column would support it. In addition, the sorting order for multiple non-Latin languages has been fixed automatically.
Relieving developers from the hassle of two string types has always been one of our main goals, and this is another small step in that direction.