The Lotte Reiniger Edition is I believe a project by the German/French TV program ARTE and some other companies (I wasn't able to get more info at the moment), to present all of the works of German born animation artist Reiniger on DVD.
Yes, they are actually trying to get ALL her work published in the best possible conditions (some films have been restored), on 4 DVD Sets (some are double DVDs) which can be purchased seperately.
The company responsible for this is "absolutmedien" (the page is in German but easy to navigate), and the 4th and last DVD will be available in October. This one will contain her Dr. Dolittle movies as well as films that have been thought to be lost, her first and last film, and her advertisement work.
I have two of the DVDs at home and am completely satisfied. Nice booklet (short text on each(!) film), good picture and sound, sometimes several soundtracks, sometimes none (some of the films were silent). Reiniger worked in England and in Germany, so about half of her films are in English and are also presented this way (with optional German synchronization). Unfortunately there are no English subtitles (maybe they are planning to "sell" this to a foreign company - could imagine BFI for example would be interested).
The individual Sets cost between 20 and 30 euros.