Please check What's New in this version.
BufferType type has been replaced with ByteArray.
More improvements in memory management.
SkyDrive components have been renamed to OneDrive to match the new name of the service
NewURL parameter in OnRedirection event of TElHTTPSClient can now be changed by the event handler. This caused the change in the event syntax
TElHTTPSClient.Post overload for web forms has been renamed to PostWebForm().
PKCS#11 constants and types have been renamed from CK?_ (eg. CK_LONG, CK_RV) to SB_CK?_ (SB_CK_LONG etc.).
All methods are now named in lowerCamelCase, traditional to Java.
VCL edition is now compiled with FPC 2.6.4 (previously FPC 2.6.2 was used).