Seems like Google keeps it’s promise and will not let wave users stand out in the cold.
According to this post on the google wave blog, google will release even more code to waveprotocol.org. This will allow everyone to install a fully usable google wave application stack consisting of the performant google wave realtime server as well as a fully-featured web frontend for realtime collaborations.
I found this bit very interesting:
a persistent wave store and search implementation for the server (building on contributed patches to implement a MongoDB store)
Very nice to see a really large open source project starting to use MongoDB, a very nice and stable blend of the best features of document databases and relational dbms.