WizKids will be adding Jonah Hex figures to an upcoming HeroClix expansion in 2010.
From their website:
The rumors are true. Jonah Hex is finally coming to the HeroClix with the DC HeroClix Jonah Hex Battle Pack. The movie themed Battle Pack contains three brand new, figures: Jonah Hex, Lilah, and Turnbull. The 3 fig Battle Pack is 100% HeroClix compatible and will be available mid-August. Check your local game or comic store this fall.