[racket] The Racket package management model

Sorry if this is slightly OT, but:

The blog post mentioned package suggestion support in DrR. I hadn't
noticed that, yet. I was curious, thinking maybe I should add
something like this to racket-mode.

When I tried, I discovered it doesn't work for me with DrR from
6.1.1.6 snapshot:

get-all-pkg-details-from-catalogs: bad response from server
  url: http://www.cs.utah.edu/plt/snapshots/20141221-aabe9d7/catalog/pkgs-all?version=6.1.1.6
  response: #f

  (for-loop . #(struct:srcloc
#<path:/Applications/Racket_v6.1.1.6/collects/pkg/private/catalog.rkt>
282 2 9888 1759))
  (for-loop . #(struct:srcloc
#<path:/Applications/Racket_v6.1.1.6/collects/pkg/private/catalog-update.rkt>
37 4 1350 2495))
  (for-loop . #(struct:srcloc
#<path:/Applications/Racket_v6.1.1.6/share/pkgs/gui-pkg-manager-lib/pkg/gui/private/catalog-update.rkt>
90 7 3331 437))

Also errors when I (require pkg/lib) and try
get-all-pkg-names-from-catalogs or get-all-pkg-details-from-catalogs
directly, using 6.1.1.6.  But that code works fine in 6.0. (In DrR 6.0
there's no error but also no suggestion; the feature not yet added, I
guess).

Is this not working with 6.1.1.6 as-expected, and simply because the
catalog server doesn't understand "?version=6.1.1.6"?  IOW is this
really intended for use only by "regular" users of released versions?