Chad Ford's preview of the 2008 free agent class is subscriber-only, but there's no need to
read it since the only part that matters is here: "But given current projections, only one team -- the Philadelphia 76ers -- will have enough money under the cap to spend on them. Even the Sixers won't have max room if (a) they have a large cap hold for a high first-round pick and (b) they decide to give Iguodala and Louis Williams, both restricted free agents, big deals this summer."
So, basically, nothing's going to happen. There are a bunch of stars who could opt out of contracts and sign elsewhere, but nobody can pay them, so they'll all get contract extensions instead.
This article available online at:
http://www.theatlantic.com/politics/archive/2007/11/boringest-free-agent-class-ever/47176/