Update: this is now official – today Leica posted the news on their Facebook page:
I received a tip that Adobe Lightroom 3 is now available for download in the “Leica Owners’ Area” for all Leica M9, X1 owners that have not registered the previous version 2.
Last month Leica did mention that they are working on providing the latest version of Lightroom to new/unregistered owners.
I cannot confirm this news, since I have already downloaded v.2 – the new version was not available in my account.
I believe this offer will be valid also for Leica S2 owners.