The Jutsu that Sasuke used against Manda was a hypnosis jutsu, This new eye techique uses Mangekyou as Sasuke has one eye open and the sound effects in the manga are to show power coming from Sasuke's eye.
As for the Mangekyou depending on how you read it, it can be activated by the death of the person closest to you, In this case Sasuke was partially responsible for Itachi's death, which triggered Mangekyou Sharingan. It is also possible to obtain Mangekyou Sharingan a slower was as Kakashi did by 'copying the jutsu' or as Madara and his brother did, it is never stated that Madara and his brother killed their friends (they would be unpopular if they did) but they may have witnessed the deaths through war. It may also be possible to obtain Mangekyou by using the three tomoe sharingan enough.
We may see amaterasu again but each Mangekyou has a different technique. So I'm still putting my money on it being a one off.
--Compare Kakashi's Mangekyou jutsu to Itachi's.--
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