Personally, I like the redesign a little better than the original. The base of the building seems a little more integrated with the plaza and human scaled, and from the renderings, I think I see some new west facing inset balconies. I think those balconies will help identify the building from afar a little better as a sleek and modern residential building rather than an office tower (Not to say I don't want one, just that I like to easily categorize buildings and developments instead of taking a wild guess).
Thanks Whalleyboy for posting this!