Muppet fansite April Fools' Day celebrations

The Muppet fan community has a tradition of hoaxes and general silliness on April Fools' Day. This is a list of April Fools celebrations throughout the years from prominent Muppet fansites:

Muppet Central

 * 2003-present - Main page navigation banner is flipped upside-down.

The Muppet Mindset

 * 2012 - Announcement that Disney theme parks will soon have an Angus McGonagle-based attraction (link)
 * 2013 - Toughpigs and the Muppet Mindset switch sites (link)
 * 2014 - The site becomes "The Constantine Mindset," a Constantine fansite (link)

Muppet Wiki

 * 2010 - present - The site becomes "Muppet Woka" and spotlights comedy-related articles (such as pie, laughter, pranks and inside jokes) on the main page.

Tough Pigs

 * 2008 - Tough Pigs becomes a Topo Gigio Fansite (link)
 * 2009 - Site colors are inverted (link)
 * 2010 - Announced that the new Muppet movie will be a remake of the original Muppet Movie (link)
 * 2012 - Tough Pigs becomes Tough Bears (link)
 * 2013 - Toughpigs and the Muppet Mindset switch sites (link)
 * 2014 - Constantine takes over the site posing as new webmaster Kermit the Frog (link)