Not quite a full release yet, but if you want to check out version 0.52 it is up here:
http://rebuildgame.com/thegame/index_v52.html
I need to do a day or two of testing, so let me know if you find any major bugs.
Changes:
fullscreen toggle in config menu
(known issue: zombie attacts messed up in fullscreen)
fewer zoom levels, and it gets closer on big monitors
pre-cached zoom levels to make zooming faster
scouting missions are now dangerous by default
tech tree - now lab research actually does stuff
workshop mission - build single-use items out of resources
building upgrades - can now add defensive upgrades, traps and attractors to buildings
all must be researched first
traps & attractors must be built in a workshop first
changed how fort defense is calculated