New Features

• It is now possible to set permission for file management operations for accounts authenticated with the FTP/FTPS service. [ftp][ftps][server-side] [#3399]
• You can now implement custom event handlers using our Python based API. [#4192]
• SFTPPlus is now distributed with the CA chains for SharePoint Online and Let's Encrypt. [#4365]
• The FTPS client-side connections now show the SSL/TLS method used together with the cipher protecting the communication. [client-side][ftps] [#4370]
• FTPS server-side events emitted when the command connection is closed now contains the cipher used to secure the connection. [ftps][server-side] [#4458]
• It is now possible to define the permissions of file management operations set by accounts that are authenticated with the SCP and SFTP services. [scp][sftp][server-side] [#4461]
• It is now possible to define the permissions of file management operations set by accounts that are authenticated with the HTTP/HTTPS services. [http][https][server-side] [#4462]
• A rename-prepend-unixtime method was added to the file dispatcher event handler. It will allow the event handler to conduct an instant, atomic rename of the source file. [#4466]
• You can now use additional SSL/TLS configuration options to protect HTTPS URL set for the HTTP authentication method. [server-side] [#4482]
• HTTPS client connections now support the Server Name Indication (SNI) TLS extension. [#4490]
• You can now use HTTPS url for the HTTP Post event handler. [#4512]

Defect Fixes

• The WebDAV location can now be configured with SSL/TLS details in order to set up the parameter for the SSL/TLS connection. [security][client-side][webdavs][https] [#3912]
• The events emitted by the file dispatcher event handler will now contain the full path to the destination file. In previous versions, the events contained the destination paths. [#4501]
• An internal server error is no longer raised when the STMP client connects to the server and the server drops the connection. [#4509]

Deprecations and Removals

• The event with ID 40002 is now associated with a server-side error when obtaining the attributes of a path. In previous versions, it was only used when the path was not found. [server-side][http][https] [#4462]
• Support was removed for Red Hat Enterprise Linux 6 and Generic Linux on IBM System z s390x mainframe and the Hercules mainframe emulator. If you are still using these platforms, please get in touch with us. [#4503-1]
• Support was removed for Ubuntu 14.04 LTS on POWER8 (little endian). Ubuntu 14.04 LTS is still supported on Intel X86_64. If you are still using this platform, please get in touch with us. [#4503-2]
• Support was removed for Red Hat Enterprise Linux 6 on POWER8 (big endian). Red Hat Enterprise Linux 6 is still supported on Intel X86_64. If you are still using this platform, please get in touch with us. [#4503-3]
• Support was removed for Solaris 10 11/06 U3 on SPARC and X64. Latest Solaris 10 on both SPARC and X64 are still supported. If you are still using these platforms, please get in touch with us. [#4503]

You can check the full release notes.