MaxConsole is reporting that Nyko is set to release a wireless version of the sensor bar:
Home theater owners rejoice!Wireless Wii Sensor Bar coming from Nyko
We've heard that high quality video game peripheral market Nyko are to create a wireless Wii sensor bar. The wireless bar will detect pointer and motion movements from up to 25ft away and have 2.4GHz Wireless technology which works for up to 30ft. It should be on sale for around $30 and is described as ideal for those home set ups with wall mounted TV's or complicated cabling.