Sewer/water/etc work is being done on the area designated for townhouses see the community map
http://west5.ca/community-story/community-map the entire section in the upper right corner is being serviced right now.
Not sure what the timeline is but they are working long days as they are moving dirt by 6am and are continuing until at least 6pm. The website says townhouses available in 2017 so the timeline seems to make sense.
The Sifton head office is essentially complete, looks like they are just finishing the interior fit outs and as of last night look to be working on the "solar parkade" area.