It has been like this for months now. I just keep monitoring the code using a browser extension and something was changed this week. Either they are getting close to launch or someone at MTNL or Carizen just decided to move things around for timepass.
Assuming they are actually working on creating a publicly visible ad exchange which would glorify the scam that they are playing on their paying subscribers... I doubt that they are on a strict deadline to launch the portal on such and such date.
It would be insane if they do launch an ad exchange allowing anyone to bid on ads that would be injected in browsing sessions of paying MTNL Broadband users around the country.