I am fascinated by new poetic forms that people create. So I thought I would include a few links here so you can explore them for yourself:
Author Helen Frost wrote her award-winning novel, The Braid, in a new poetic form which was inspired by Celtic Knotwork. Wow!
About.com: Poetry covers a number of poetic forms, like Fibonacci poems, based on the Fibonacci number sequence. Cool! Gregory K also introduces the "Fib."
Another mathematical form, the Tetractyses
Invent Your Own Poetry Form on Education World
If you know of another new form or if you come up with one yourself, send me information about it.