Releases are labeled after locations on Terry Pratchett's discworld novels and have a certain order.
The first one is the pre1.0 release labeled Omnia, followed by the great 1.0 bang version called The Ankh-Morpork release. Ankh-Morpork is the largest and hippest city on the discworld so the most important milestone (which 1.0 always is) is labelled after it.
Therefore the release sequence will be:
So don't feel confused about the names. There will still be numbers around, which will help you out in case of irritations.