Ken Worsley of Trans-Pacific Radio has made his prediction that Nova will no longer be functioning by November 1st.
You can listen to his prediction at 16:40 on the audio script here:
http://www.transpacificradio.com/2007/08/16/bizcast-japan-7-retail-uniqlo-condo-prices-nova-mobile-price-wars-and-the-state-of-the-japanese-workplace/
By the way, Ken Worsley accurately predicted the downfall of NCB, another English conversation school that went bankrupt. His prediction, which was made a year earlier, was accurate within six weeks!