Please check What's New in this version.
All SecureBlackbox code has been reworked for more efficient memory management.
In SSL/TLS the default set of enabled versions was extended with TLS1.1 and TLS1.2 (except TElSimpleFTPSClient that still defaults to SSL3.0 + TLS1.0).
OnFileOperation and OnFileOperationResult events (types and parameters) of TElSimpleFTPSClient class have been changed to include operation type (Upload, Download, Deletion).
VCL edition is now compiled with FPC 2.6.2 (previously FPC 2.6.0 was used). FPC 2.6.2 includes certain minor changes in syntax parser.