Adobe considers shorter update cycles - The H Security: News and Features
According to Brad Arkin, Adobe's Director of Product Security and Privacy, the company is currently considering reducing the interval between security updates for Adobe Reader from 90 to 30 days. Adobe started a three-monthly cycle in mid 2009 and has since been releasing updates for Adobe Reader and Acrobat on the second Tuesday of every third month – the same day as Microsoft's official patch day.
Adobe considers shorter update cycles - The H Security: News and Features