Read Thread: Olympic spoilers reminder
It was on my to-do list--I even hacked a comment in the code for where the themes are listing the dates of the Olympics so I could drop it right into place once the theme was done.
But I never got around to it. Maybe next time. *shrug*
The moon landing was the last new theme I had ready to go, and right now, the new theme machine is dry. Eventually I do plan to make more new themes, but it may be awhile before I get around to it. Perhaps I'll have something new by the time September rolls around. =)