The release notes are:
- - Forex Connect has been rebuilt to support C++11.
- Windows version now has VC 14.0 runtime (MSVC 2015)
- Linux version has been built with GCC 4.9.2
- Added ability to get information about rollovers via new interface IO2GRolloverProvider
- Improved IOS wrapper
- Updated Objective-C wrapper to comply with existing API
- IOS samples updated to work with Swift 4
- Added more IOS samples (Orders and Trades view, Getting history prices)
- Improved Android support
- Added x86 build to work with emulator more efficiently
- Added new API wrapper - Netcore (MSVC 2017 required) - able to work on Windows, Linux and MacOS
- All samples are also published on Github
- Eliminated support of 32-bit version for Mac OS
More details are here