According to the results, Swift went from the 68th most popular language last quarter (when it launched) to the 22nd, a jump of 46 spots which is “unprecedented in the history of these rankings.”
Swift was announced by Apple in June at its WWDC developer conference, making it less than a year old. The prominence of the language and huge developer interest indicates it’ll continue to be popular in 2015 and should eventually surpass Objective-C (which is likely what Apple always intended).
The rankings are made by analyzing language discussion on Stack Overflow and actual usage on Github in order to get an idea of which languages are growing in popularity and which are shrinking.
➤ Programming Language Rankings: January 2015 [Redmonk]