Well, for starters, there's been quite a few threads on this, but I'm not here to play forum moderator.
Anyways, I hate to burst your bubble, but they could go for forever with version numbers.. just tack another number to the right.. 5.999999999999999999999999999999999999999999999999 9999999999999999 etc.
Last I heard, I think it is being worked on, but it doesn't sound like it is close.