Xcode is an IDE, this version being released in March.

The Ides of March is the day Julius Caesar was assassinated.

I think that’s all there is to the joke, unless I’m also missing something.

Integrated development environment - Wikipedia

@Evkob @TechnoCat yep, that's it. Well, save yesterday was the ides of march, so that's why i posted it hen.
That… Is a very deep joke, would not have gotten it without the explanation