As there is some interesting activity with Bitcoin integrating with mpesa I have added Swahili as a target language for MultiBit.
Recent news to do with Bitcoin and East Africa include:
There is this new Kipochi wallet:
http://www.dailydot.com/business/kipochi-mpesa-bitcoin-startup-kenya/
Localbitcoins recently announced this:
http://localbitcoins.blogspot.co.uk/2013/07/trading-bitcoins-using-m-pesa-in-kenya.html
Swahili is the lingua franca of East Africa - have a look at the wiki:
https://en.wikipedia.org/wiki/Swahili_language
If you are a Swahili speaker and would like to help translate, please visit http://translate.multibit.org
Asante!