How to publish magazines (in PDF format) to Apple Newsstand? We're interested in publishing our magazines to Apple's Newsstand and we're wondering how we would go about doing this?

I've read you need a developer kit (which we don't have), is there a way to just publish the magazines without this?
If you do not have a dev kit you can use other companies who build, release and manage subscriptions.

One such comapny is Woodwing 

However these options are generally very expensive. You are better off (if you can create and develop the product yourself) purchasing the SDK license ($99 per year) or failing that you can use Adobe software to publish the Newsstand Magazine but that costs about $500

There is more information on Newsstand here