Unfortunately, there is nothing yet. That doesn’t mean there won’t be, mind you. What you can do currently is email your Evernote notes directly from Evernote into Springpad. This will be a slow process if you have a ton of notes, but it could help you sift through what’s important and allow you to get a better handle on how you want to organize your Springpad right off the top. The catch (unless things have changed recently) is that the email needs to come from the email that is registered in Springpad — so your registered email in Evernote will have to be the same. It is easy to change the registered email in both services.
More details here: http://blog.springpadit.com/2010/03/save-notes-to-springpad-using-email/