Here is some information on Spring.
The pattern can be found in the April 2008 Stoney Creek mag. I found mine at Borders. There is no mention of a specific designer, just that its part of the Stoney Creek collection. There is another cube that goes with the bunny, its a welcome cube complete with more flowers, birds nest and umbrella.
My project is being done on 18 ct white aida and DMC thread.