It all depends on the regulators.
Even though banks take, I think it was, 104 days longer to sell a home than an investor in CA they feel, according to a recent BofA exec they are having no problem selling once they have a physical home. This is also reflected in Freddie saying that they are getting 94% (from memory) of BPO on REO homes. Bad news for the pie in the sky Bulk REO crowd - if Freddie can do it - anyone can. Even I work with a private equity firm that has a proven track record of sales at 94% of BPO with 6K-8K homes nationwide at any given time.
What this means to everyone is that the banks now have a developed infrastructure both internal and outsourced where they can efficiently liquidate homes into the retail market which leads back to the regulators.
If the regulators let the banks sell, then we will likely see a lot more homes coming to market. Not 2008 dumping, but consistent available inventory which will gradually depress prices. In markets where the bubble has yet to fully burst - Los Angles, Orange County, especially beach properties - this price depression will likely be more severe than other areas that are already affordable relative to the income that is earned by the residents.
What will the regulators tell the banks? They may tell the banks to hold off in order to stabilize prices for the election (remember this is the same group of politicians that forced Solyndra to announce a plant closure after the last election). They may let them liquidate. Who knows? But if it does not happen in 2012 due to the election - 2013 will be when all bets are off.