Its about developing applications which utilize WiFi in the best possible way.
"Entries to the challenge must be applications created for Wi-Fi enabled Symbian OS-based devices. Entries must utilise the Wi-Fi connection of the device for some of their operation (though they may also operate over the GPRS/3G connection or in an offline mode). Entries should be native Symbian applications (J2ME MIDP applications are not eligible) and provided in a .sis install file."
Check out the prize:
"The winners of the competition will be announced at the Mobile World Congress in February 2008. The prizes on offer to the winning developers are:
- First Prize - £1000
- Second and Third prize - £250
- Ten runners up - a Symbian press book"
More info here.