Please Note If you're not familiar with it, the Lulu-Formatting option formats a stock manuscript with page numbers, and adds in things like a Title page, index, and copyright text. Most authors do this themselves and publish with the as-is option.
In a nutshell, the problem with the Lulu-formatting option is that it's very buggy. Unless you format your book just right, it looks awful. It's actually easier to just do that stuff yourself. We're expanding our help and knowledgebase to assist any authors who want to learn to do this.
The as-is converter is what the vast majority of people use. It's essentially Acrobat Distiller, specially set up to process to certain default sizes. That's not changing. You can still upload a pile of jpgs, MS Word docs, multiple pdfs, etc... We just won't be trying to add an index and page numbers for you, because we usually got that wrong anyway.
Also, people can still upload a single PDF and bypass the converter entirely.
Joe K