Here are two "Sound Effects" plushes for 2012. They have made an ok Sonic & Tails here, in their cardboard display boxes. They're probably fairly large (like a 12 inch) as they seem to be retailing for about $24.00 each. The difference here is that they can make noise. (See the "Press Here" sticker on the belly dot) The confirmed sound is "get a ring chime", but there are others. They look fleecy/fuzzy, and the Tails design has that 'thick felt' for a single row of 'bangs'. The Sonic looks a bit better than the Tails who seems to have somewhat of the 'big body' problem , but he still looks ok.
NOTE:
USA customers/possibly world-wide, www.toy-wiz.com will be importing these for you to buy in August 2012. 

TODO: I thought these were actually in the US as a Toys R Us exclusive, need to find more about it