Life is Feudal has apparently sold 100,000 copies. Bitbox has clarified to Massively that the current build of the game "is a 64-player version" and that the "thousands of servers [...] are all persistent."
Producer and project lead Vladimir Piskunov attributes the early success of the title to the freedom allowed for players to build while emphasizing that these sales will help fund the development of the game's full MMO experience. No specific target date for the game's MMO incarnation has been set.
[Source: Bitbox Ltd. press release]