Hawaii 5.0?
At my last company, we started code-naming our software releases after tropical islands. 4.0 was Bora Bora, 4.1 was Moorea, ... and of course the one that was planned to be 5.0 was called Hawaii. But at the last minute the boss decided that the Moorea release should be called version 5.0 instead, for marketing reasons. So then we ended up with Hawaii 6.0...