Poking around at
http://www.surrey.ca/city-services/1343.aspx helps to get a better sense of development. Surrey's own projections:
In 2006, the population of Surrey City Centre totalled 23,000. In 2006, 14,500 people were employed in Surrey City Centre. It is anticipated that by 2031, the population of Surrey City Centre will increase to 65,000 and the number of people employed in Surrey City Centre will rise to 36,000. - See more at: http://www.surrey.ca/city-services/1343.aspx#sthash.GqpCLHLz.dpuf
If my math is correct, that works out to 11,187 per square km in 2031. As a comparison, downtown Vancouver and the West End have a population density of 17,138 per square km (2011). My first reaction is surprise as I would assume that density would give Surrey City Centre a very urban feel. However, I see that older 2006 figures for Metrotown have the population at 25,540 in 2.97 km2 so 8,599 per square km, so not terribly far off from where Surrey City Centre will be in 15 years. While dense, Metrotown doesn't feel like a true city, at least to me. Too many "towers in the park" and again, a ton of surface parking. I hope that Surrey does a better job in this regard.
Here's the February map of current development projects, in case that hasn't been posted: