Always great to find a fellow Outlander lover! DH was travel years ago and saw a woman on the plane reading Outlander. He asked about it and thought it was a book I would like. I am like you and started the series when several books had already been released. That was great, no waiting.
I love the series but can honestly say that I like the last book the least. I have heard that there will be two more books. I also get updates from Diana Gabaldon's web site via e-mail. Tells you her tour and book signing dates and places, excerpts from new books and how she is coming with the writing of the new book.