There Is an aerial view video from Murphy building contractors showing the construction progress so far on the local newspaper site.
The station is the first one to be built on the Great Eastern Mainline for more than a century
www.essexlive.news
Alas it's a Reach website so don't click through if you don't want to cancel a dozen pop up ads first! However what I find interesting is that there is definitely room for a 4th track/platform in future if there was any requirement. Appreciate that may be far in the future if ever, but interesting never the less.