James Hibberd's Live Feed blog at The Hollywood Reporter has very helpfully complied a list of the TV broadcast network pilots on order, and we've gone through and culled the sci-fi/fantasy/supernatural ones for your use.
Fox—home of Fringe, Dollhouse and Terminator: The Sarah Connor Chronicles—naturally has the most sci-fi pilots in the works, starting with Masterwork, from Prison Break's Paul Scheuring, about a race against time to recover the world's most sought-after artifacts, a la The Da Vinci Code.
The network has also ordered an as-yet-untitled "reincarnation project," from Friday Night Lights' David Hudgins, about past-life investigators who use reincarnation to solve mysteries; Human Target, based on the DC Comics title, about Christopher Chance, a mysterious security-for-hire who assumes the identities of people in life-threatening danger, becoming the "human target" on behalf of his clients; Eva Adams, about a male chauvinist who wakes up in woman's body; and Virtuality, from Battlestar Galactica's Ron Moore, a sci-fi drama set in two different worlds, outer space and a seemingly limitless virtual reality.
ABC is a close second, with Eastwick, from Jack & Bobby's Maggie Friedman and based on John Updike's The Witches of Eastwick, about three modern-day women who discover they have magical powers; Flash Forward, from Threshold's David Goyer and Brannon Braga, in which everyone in the world blacks out for two minutes and has a vision of their future; and V, from The 4400's Scott Peters and based on the 1983 miniseries, which chronicles human resistance fighters battling aliens.
At NBC, there's just Day One, from Heroes writer Jesse Alexander: In the aftermath of a "global event" that devastates the world's infrastructures, a small band of survivors strive to rebuild society and unravel the mysteries of why the event took place.
CBS, the home of CSI, The Unit and (*yawn*) NCIS, has no sci-fi pilots.