The Waldorf at Bonnet Creek has an artists rendering here:
http://www.insidethecorridor.com/1.htm
Construction started in April of 2007 with the groundbreaking and it's expected to be complete sometime in 2009. This is not in partnership with Disney in any way, shape or form. The Bonnet Creek land is technically Disney adjacent but actually buts in slightly to Disney property.
The Bonnet Creek land parcel came about as a result of a landowner who refused to sell to Disney at any price.. even before they knew the scope of the proposed development.
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As for the Four Seasons ... when originally announced all the press releases stated an opening in 2010.
I'll personally be surprised if they meet that date. I expect that it will be 2011 in all likelihood before that resort opens it doors. There are not artists's renderings of this proposed development.
Hope this helps,
Knox