a question about lts releases

Tue May 13 03:05:14 BST 2008

Hi, I never noticed before that the lts releases have a 01 release as well as the first release.
I see this for dapper, and see Hardy will also have one in July. I was just curious as to why this is, and what the difference will be in the 01 release since the other distros only show the final release?
Thanks Mike.
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