Well... according to Marko Ahtisaari (VP of design in Nokia), he spends some of his time working on something that was previously misunderstood in the news as tablet. Here's a quote from him explaining that bit of news:
"The reason I paused for a moment is because I'm not on record but misquoted in Finland in an interview where I said that I spent over half of my time on products that are not--well, that are products that people wouldn't think are phones."
"That's what I said. But the way the news was picked up was that I spend half of my time working on a Windows 8 tablet. Which is not what I said, but I guess that's what someone wanted to hear. So that was the news of the day."
This would make me suspect that Nokia does have plans for a device that's something between a phone and a tablet.