As with other software companies, WinZip invests a lot in new development to make sure that WinZip continues to perform correctly on new platforms and to address general changes in computer usage, such as larger files and the need for encryption. In addition, a great deal of new functionality has been included taking WinZip beyond basic zipping and unzipping functions, including cloud services support that makes uploading, storing, and sharing files easier. Additionally, the latest versions of WinZip support the latest versions of Windows, the appropriate version supports the latest macOS, and many new and/or improved features are present -- all thanks to the investment made in research and development.
WinZip upgrades are free under the Suite subscription plan. WinZip Suite is available in three different feature sets; Standard, Pro, and Ultimate. This plan includes unlimited access to the latest releases and technical support for all included products.
WinZip upgrades are not free for perpetual (one-time) licenses.
WinZip one-time license for the PC is available in three different feature sets; Standard, Pro, and Enterprise; so users only pay for the features that might actually be used.
If you have a perpetual license of WinZip (WinZip 27 and lower), you can purchase a new license at https://www.winzip.com/en/product/winzip/.