I think it will raise the land value a lot. This area will turn into a second downtown for Raleigh. There is also a second tower planned that will be 18 stories and mostly an office tower. There are also plans for several urban type projects which will be 3-5 stories with possibly street level retail. If Soleil is a success expect more of these projects in the future.
Here is a link for the Soleil center. It does not include the second (18) story tower. Copy and paste it in the address window. Don't copy the part that says "url."
http://www.raleighskyline.com/soleilcenter/