Hi Pika,
I tried to access the article (dated 13 Feb 2015) but it seems one has to subscribe.
I've had contact with the writer of the other article in your post) a year or 2 ago but on different issue.
I've now emailed the writer of the article to find out whether, with his ear on the ground, came across any developments/talks regarding Mbalam-Nabeba.
Will let you know if I hear something back.