Update:

> Seems this "Linkbook" labelled LimeBook has been released to
> South Africa meanwhile.
>
> Press release:
> http://www.vodacom.com/news_article.php?articleID=593
>
> Website:
> http://www.linkbook.co.za

It looks like the Linkbook with MPC5121e got superseded by the Webbook with i.MX515.

http://www.vodacom.com/news_article.php?articleID=1068
http://www.engadget.com/2011/10/19/vodafone-brings-arm-and-ubuntu-together-for-south-african-webboo/