The eagle eyed among you may have spotted a slight issue with the new revealed LEGO® Ideas set. The latest is Steamboat Willie which arrives on April 1st, however it appears to carry the same release number as the recently released Flintstones set. Both sets carry the #24, however Steamboat Willie should be #25. The LEGO Ideas team have noted the error and provided this statement. Set #24 The Flintstones is available now and Set #25 will be able from April 1st.
Due to our excitement to get the Steamboat Willie set into the hands of LEGO fans around the world as quick as possible, an error was made on the packaging relating to the sequential set number. It was mistakenly printed as #24 and it should have been #25. This will be corrected in future sets.