It seems some dealers are offering upgraded versions of the MG3 SW:
Presumably the new engine cover also includes the fly by wire throttle.
Source: http://www.che168.com/article/html/200904/20090429/20090429_241142_1.html
MG3 model enhancements:
- New engine cover,
- Coloured seats,
- DVD + Bluetooth + Navigation + first-class multi-camera configuration (car audio),
- Twin sports exhaust pipes,
- Angel eye headlights (with HID ballast),
- The blue line chassis lights,
- Door kits,
- Body light,
- Red calipers,
- and other various modifications.
Presumably the new engine cover also includes the fly by wire throttle.
Source: http://www.che168.com/article/html/200904/20090429/20090429_241142_1.html