Windows 10, PS4, C4 & Systemd News Kicked Off 2015

[Luke_Wolf]

Maybe, but it seems clear to me that it's an acrynym for "Q toolkit". Therefore, "X toolkit" is too.

Nope, not an acronym, it's a name and it's pronounced "Cute", it's stylized after Xt but it is officially referred to as Qt or the Qt Toolkit