Our local reviewer just posted this on facebook which confirms the 'rumours' that have allegedly been flowing from the Podcache Show (Not seen them myslef- really should do some research beforee posting!) ...
"An update on event caches ...................................
5.7. Changes to Event and CITO Guidelines - February 2015
Event Caches represent the cornerstone of the thriving and growing
geocaching community. It's where explorers meet face-to-face, swap
stories of their adventures and welcome new geocachers. To ensure
geocachers are provided a minimum amount of time to form meaningful
connections and build a sense of community, Geocaching HQ has updated
Beginning February 18, 2015, minimum durations will go into effect for Event Caches, CITO Events and Mega-Events.
Event Caches will now be a minimum of 30 minutes.
Cache In Trash Out Events (CITO) will now be a minimum of 1 hour.
Mega-Events will now be a minimum of 4 hours.
We know most geocachers are overachievers. We therefore encourage
players to exceed the minimum durations to enjoy more time with their
fellow adventurers. We at Geocaching HQ believe the update will help
ensure a positive, healthy and growing community into the future."