Still ample of space left in Old TPs Itself to add new Channels as far as SD Channels were concerned.
While for HD Channels few more channels could be still added.
Airtel usually accommodate maximum number of Channels in the TPs available,once when there is no more space for Channel addition they will activate new TPS.
Now it's almost time for new TPS once they start adding new HD channels we may get some clear cut indication of what they are thinking about New TP activation based on where they add New channels.
My calculation is last year's added tp have many space.but airtel delayed for hd channel addition.problem only airtel side not for bandwidth issue and tp space.