Nintendo has told Eurogamer there are "no plans" to retro-actively fit Wii MotionPlus capabilities to existing games, keeping the new and optional features instead for specifically designed games.
"Wii MotionPlus accessory is only for games that are designed to make use of its abilities. Wii MotionPlus is an optional accessory for developers and players who want to further refine their game experience," a spokesperson for Nintendo told us. "There are currently no plans to make it compatible with existing non-Wii Motion Plus enabled titles."
The Nintendo spokesperson added that Wii will continue to support games which work with the original Wiimote powers. These will behave no differently when played using the clip-on MotionPlus accessory.
"The Wii Remote pioneered a revolution in video games and made this pastime accessible to millions of new gamers. This technology is still relevant and compelling," said the spokesperson.
Wii MotionPlus adds a further three degrees of motion-sensing capability to the Wiimote, producing quite staggering results. Serve and volley to our hands-on impressions of Virtua Tennis 2009 - one of the first third-party titles to support WMP - to find out why.
Wii MotionPlus launches in Europe on 12th June. One MotionPlus peripheral will also be bundled with each copy of Wii Sports Resort, which goes on sale from 24th July.