[xmonad] question re --version flag

Let be begin by congratulating the xmonad developers on the release of version 0.6. I have been a delighted user since 0.4. Thank you for a fantastic product. I saw on the announcement of the 0.6 release that a new flag had been introduced: " --version: print *xmonad*'s version " Naturally, I tried it first thing after installing v 0.6, and was surprised to get the result "xmonad 0.5". I am left wondering what's up. I deleted the v 0.5 binary and seemingly installed v .6. If the flag is indeed new, then I must have v 0.6, and am seeing an oversight in a version number. Is that what I am seeing, or did v 0.5 also have a --version flag? David Cabana