"Version 3 of the GNU General Public License will soon be
finished, enabling free software packages to upgrade from GPL
version 2. This article explains why upgrading the license is
"First of all, it is important to note that upgrading is a
choice. GPL version 2 will remain a valid license, and no disaster
will happen if some programs remain under GPLv2 while others
advance to GPLv3. These two licenses are incompatible, but that
isn't a serious problem..."
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