Amazon.co.uk has the first blurb for Saga by Conor Kostick.
Ghost is a fifteen-year-old anarcho-punk airboarder, with no past and no memories - only a growing realisation of her own extraordinary abilities. But who is she really? And can her world really be virtual, nothing more than a computer game? Why is she becoming embroiled in a battle with the sinister ruler of Saga - the Dark Queen?I hope this doesn't give away too much of the plot.
Update: O'Brien Press has a page for Saga too. Their blurb is longer:
How do we know we are real and not just some character in an elaborate game? In the virtual world of Saga, Ghost is a fifteen-year-old airboarding anarcho-punk, with no past, no memories, but a growing realisation of her own strange abilities. But who is she really and why is she becoming embroiled in a battle with the warped leader of Saga -- the Dark Queen? And what happens if you dare to reach outside your world, or to question your identity? Is that simply the road to madness, death and destruction?Again, I hope this isn't too revealing.