Hm, I can't seem to be able to load up a save with the current version. I started a new game, saved, and came back to it an hour later and I couldn't load a save. It says something about it not being a compatible save. It worked with the dev version before you implemented the temporary outposts.
I can confirm that there is a savegame issue in the Dev build. I saved the game, tried to about two minutes later, and was met with an error. On the plus side, I did notice that the Imperial faction had sent out a "Massive Construction Fleet" to the Nur system, so it looks like the are indeed building outposts. I'm heading that way now to see if they were successful in building it.
EDIT:
Just arrived in Nur and I can confirm that the Imperial fleet successfully built their base. It currently provides all of the utility of a normal base including allowing me to join the faction, providing blueprint and factory management, personal hanger, and station hanger with all of the refitting, selling, and purchasing options one would expect. Now, I don't know if it is
supposed to allow all that, but it is what is currently available.
Out of curiosity, if these structures are temporary, how will personal inventory and factory usage be handled if the station's time limit runs out while there are items in the inventory/ships still being built?