http://dayz.com/blog/dayz-moving-into-2015
tl;dr
here's the features...
Q1 2015
Basic vehicles
Central economy (advanced loot distribution)
New renderer
New Zombie AI
Basic stealth system (zombies, animals, ...)
Diseases
Q2 2015
Advanced vehicles (repair, modifications, ...)
Advanced animals - life cycle, group behavior
Player statistics
New UI Stamina / fatigue
Dynamic events
Q3 2015
Traps
Barricading
Character life span + soft skills
Animal predators + birds
Aerial transport
Console prototype
Q4 2015
BETA version
Animal companions (dog, horse)
Steam community integration (Achievements, Steamworks modding, etc)
Construction (building shelters / walls / ...)
hopefully our dayz community can keep going strong until 2016, which is when the full version of DayZ standalone will release but i'm guessing that even before then that there will be a strong game to be going with if we wanted to pursue a DayZ Standalone server in the future
For now though that minimum a year away, so current server is good enough to be getting on with.