Twin Peaks - The Definitive Gold Box Edition, which contains the pilot and both seasons of the show in one DVD set, is available for pre-order. The release date is October 30, 2007. Click above to pre-order it from Amazon.com.
This set should be incredible. In addition to having the entire Twin Peaks series, it's got both versions of the pilot, deleted scenes and brand new interviews that were not part of either of the two individual season box sets.
I cannot put into words how happy I am about this!