They have added nothing of the sort, as far as I can determine. A bitcoin site added M-Pesa as an option for payment. If there is any official affiliation, I'd like to see the proof. No mention of bitcoins or Kipochi appears on http://www.mpesa.in/
You may as well say that 2/3 of Americans have a Paypal account because they have a credit card.
I've seen several articles now that heavily imply that this is an official M-Pesa service, which smells a bit scummy to me, if not outright scammy.
Edit: On their blog they explicitly state: "The Kipochi to M-Pesa service is operated by an independent 3rd party company in Kenya and is not directly affiliated with Safaricom the owners of M-Pesa."