Project: QGIS
Version: 2.14.0
The delimited text provider now supports curved WKT strings, and the memory provider (eg "temporary scratch" layers) has gained full support for curved geometries. Additionally, if QGIS has been built using GDAL versions 2.0 and up then QGIS will fully support curved geometries in supported file types (eg GML files).
This feature was developed by Nyall Dawson