Yeah, you are true. There does not exist any real information behind that, but still the rumour goes on. There was one image iirc from maemo summit that implied that some kind of an update/feature to web browser would/could/might come. I think that has started the rumours to be honest. The "update before christmas" has just built much ground here even though there seems not to be any real information behind that fact. Yeah I'm pretty much speculating that 42-11 stands for week 42 or something like that. I don't have the slightest idea how the version numbering goes. But a layman can easily get that idea if one does not have any knowledge. The idea was to show that some people might think it that way that we have been waiting for "ages" and stuff like knowing that the update is named "51-something" just happens to accidentally feed these rumours more.