The lead petitioners for the recall effort against Houston Mayor John Whitmire (D) has said that they are planning on kicking off a campaign in the fall.
The recall is over general complaints about incompetence, but seems to be focused on the specific policy issue seems to be a water plan.
Petitioners need about 63,000 signatures in 30 days (25% of turnout). The article notes that they are shooting for 64,000 signatures, but perhaps something is lost in translation there, as that would require an extremely unlikely success rate.