On the contrary @aydenjason, I'd take Airtel's silence lightly, noting their demonstrated fondness for agressive publicity - they would trumpet any sign of success.
@Barrywhite, nice user name. Assuming they make say 50/= profit per port (after paying operators, overheads, taxes etc), they'd need around 7 million transfers to recoup investment.
Unless, of course, they're paid a small amount (say 1.00) for each directory lookup, necessary every time a ported user makes a call. In this case, the new operator would make less money per call.