It has been announced that the third and concluding volume of Melanie Rawn's Spellbinder trilogy has been cancelled due to lacklustre sales of the first two books in the series, Spellbinder and Fire Raiser. Rawn and Tor have decided to move onto a new trilogy, with the working title Glass Thorns, with the first book due in 2012.
This move appears to have been received badly by Rawn's fanbase. Rawn had left a previous series, The Exiles Trilogy, incomplete after suffering a family bereavement and a lengthy period of depression. Upon returning to writing several years later, she asked for fans' patience as she wished to work on a new project to help ease her back into the field before she tackled The Captal's Tower. The cancellation of Spellbinder appears to have left a window for her to complete the earlier trilogy, but instead she has moved onto this new project.
To put it mildly, this does not appear to be a wise move. With two trilogies left incomplete whilst she moves on to completely new pastures, Rawn is in danger of acquiring a reputation as an author who cannot complete the works she has started, thus eroding any faith her fans have in being able to complete future series and thus damaging future sales. Whilst there is nothing she can do about Spellbinder in the short term (Tor will have exclusive rights on the series for a number of years, preventing other publishers from picking it up or completing it), certainly there should be no rights or publication issues after all this time about The Captal's Tower, and it remaining incomplete at this time does not bode well for the prospects of it ever being finished.