Xiaofan wrote regarding 'Re: [OT] Torvalds: No GPL 3 for Linux' on Fri, Jan 27 at 08:06:
> Actually I know that Linux kernel will still be GPL V2. The problem is
> that if Linus can keep Linux kernel as GPL V2 once many other
> open source software packages will move to V3.
> 
> Is GPL V2 and GPL V3 compatible?

What does that matter?  The kernel can run programs whether the
programs GPL or totally closed-source with no redistribution allowed.
The only problem might be if a distribution wants to claim to be fully
GPLv3, which I'll bet would result in bigger problems than just the
kernel using an old version of the GPL.

To more directly answer, though, the new v3 GPL basically adds a few
more definitions which weren't explicitly listed in v2, but were
regarded as implicit in the spirit of the document.
http://gplv3.fsf.org/rationale has a good discussion, particularly in
section 2. :)

--Danny
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