Here's what the editors, Crispin Wright and John Divers have to say about its focus in their inaugural editorial:
Thought will specialise in the publication of short original analytical philosophical papers bearing within the following areas of the subject: Philosophical Logic, Philosophy of Mathematics, Philosophy of Language, Metaphysics, Epistemology (including formal epistemology and confirmation theory), and Philosophy of Mind. We intend that our readers will be exposed to the most central and significant issues and positions in contemporary philosophy that fall within this broad remit. We will publish only papers that exemplify the highest standards of clarity, and that promise to have significant impact on existing front-line debates or to lead to new ones.