Forbidden Planet, a retail store in the UK, has confirmed via their website that a Meow Wow (the Dream Eater Spirit in Kingdom Hearts 3D [Dream Drop Distance]) plush toy will be sold in the United Kingdom. The plushie will be available on August 30, 2012 for a price of £32.99 (or £29.99 if you pre-order). This toy was also earlier announced for France, so it seems likely that we'll see a release in other regions as well. Thanks to Sammi from KH13 for the find.
Update: It seems that the Meow Wow plush toy will release in North America on August 30, 2012 as well. Various retailers, for example, AAA Anime, have changed their pre-order pages to contain the release date of the toy. The retail price in North America will be US$34.99.