A list of major new features implemented in phpBB 3.0.6

Better captcha options and backported 3.2 captcha plugins:

Classic and GD CAPTCHA
reCaptcha (based on API from recaptcha.net by Mike Crawford and Ben Maurer)
Q&A CAPTCHA
3D Wave (by Robert “Xore” Hetzler)

Introduced new ACM (Cache) plugins. (Please consult our support forums for help if you need to use one of [...]