| In computers, an upgrade is a new version of or addition
to a hardware or, more often, software product that is already installed
or in use. Upgrades may be sold as specially labeled, less expensive "upgrade"
packages (as, for example, Microsoft's Office suite products) to existing
users alongside versions of the product that are made for sale to first-time
users. In other models of software distribution, an upgrade may also be
available for free or for-charge downloading from the product maker's site.
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