it's just for now. as soon as the language gathers steam you can expect for the modern amenities to show up, including 2D plots on the desktop.
Julia has a stub-free FFI; you don't have to write anything to interface with C. trivial to add your favorite 2D graphics library.
P.S. Don't people know how to interface with Gnuplot?
This is something I'd miss. I use R sometimes only because it's plotting features are so fantastic.