Upgrade

Expansion/extension of a system or soft­ware. The term “upgrade” was first only used for a hard­ware-related exten­sion, although it is now (almost) syn­ony­mous with “update”. Some soft­ware providers dif­fer­en­tiate between a free-of-charge update (usu­ally pro­vided to resolve errors, etc.) and a fee-based upgrade (usu­ally also con­taining some addi­tional features).

See also: Patch