I don't know how reliable the Guardian is in terms of tech news but it seems they are the only news outlet out there saying that the Nokia Ace might have a hardware keyboard.
Full article: Nokia to unveil three smartphones next week | Technology | guardian.co.uk
The third handset, the Ace, appears to be designed for business users. It is the only new device with a keyboard, which is hidden behind a slide screen, and the casing is black with silver detailing. According to TechWith, it has an eight-megapixel camera
Full article: Nokia to unveil three smartphones next week | Technology | guardian.co.uk