Just looked at my new sets and noticed that the side label is different now. Doesn't have a Leopold logo on it any more and instead says 'Topre Corporation' and has a bar code. However, the label is glued on top of another label on all three of my boxes, so the old Leopold one might still be under it.
Also, the model numbers have changed. Used to be that the printed sets were XF0100KT#1 through #5 and the blank ones were #6 - #10. Now the blank ones are #1N - #5N, or at least I think they are, I only have blank yellow #4N. If anybody got other old blank colors, care to check your labels? Of course, all the logic breaks down for the new lime green sets, so they are #11 and #11N.
Of course, this doesn't mean anything. The caps are still exactly the same.