Psycho Pass Episode / Special Order
If you've watched the first season, you should skip the specials and proceed directly to the second season. After that, watch the movie (when it's available).

The "specials" (usually called "Psycho Pass: New Edit" or "Psycho Pass: Extended Edition", I think) are a re-cut/updated version of season 1, with only minor changes. The reason there are only 11 of them is that they're double-length. If you were starting from nothing, it would have been better to watch the "specials" and then season 2, but since you've already seen season 1, I don't think there's enough new content to warrant watching the re-cut version before moving on to season 2.

That said, if you ever find yourself wanting to rewatch the first season of Psycho Pass, I would recommend watching the "specials" instead of the original version of season 1.