We are pleased to announce the release of WHMCS V4.3.1 – the latest stable release of WHMCS. In this release, there’s lots of exciting new features including a new open source, fully customisable ajax order form, client side twitter integration, time limited recurring promotions, an expanded product downloads feature to allow addons to also grant download access, customisable admin email templates, ability to invoice in advance different periods for different billing cycles, weighting product addons, and much more.