We have been hearing about Nokia's C-Series for quite some time now.
It was first heard of back in July when Nokia was caught trying to patent its X and C-Series brands.
While we are aware of what the X-Series would be like, little was known about the C-Series.
As for the C5, the phone seems to be decently spaced.
features

• 2.2 -inch QVGA display
• 3.2 megapixel camera
• HSPA and FM Radio.
• 3.5mm jack
• memory - micro SD cards to increase the & 50MB internal memory.
• This one might just be released in the months to come.
Nokia has scheduled its own press event as an alternative to the Mobile World Congress at Barcelona in which is it not participating. Hopefully, the C-Series would be officially announced there.