In stock at local dealer; Issue is the price.
Local dealer inventory has five SE V6's in on its website. Four say "available immediately" and one says available April 10, 2012 (tomorrow)
http://bobtylertoyota.com/New-Inventory.aspx
It probably depends on the region, but it appears the demand for the V6 exceeds the supply. The V6 goes for almost list but they practically give away the LE I4's.
If you open up the Bob Tyler toyota website,
http://bobtylertoyota.com/default.aspx
the first thing that pops up is a huge "pop up" that says new 2012 Camry LE $17,999.
This has been an endless special since at least late January. I was there in late January for my last serivce and there was a giant billboard right off I-10 by the dealer that displayed the $17,999 and I could not believe it was an LE not a base. I asked the salesmen what was the rub .... I don't need a new car (love my 09 LE V6 with 17" alloys) ..... but I have been caught without a car twice (I am an accident magnet but never had one my fault) so I explained I always want to know what car I would buy on a one day notice if I had to. I told him I would want an SE V6.
He said essentially ..... " by the time you add options and transportation yada yade to the $17,999 sale price," you can still drive one out the door for well under $20K. He said they lowball the price on I4 LE's for volume and to get used cars in .... but the V6's practically fly off the lot (they had zero V6 SE's in stock when I was there) and they go for pretty close to MSRP.
As for the reason the SE I4's are so popular ..... it's the obvious. $500 for upgraded interior and 17" alloy wheels. He agreed that Toyota pricing is absurd on wheel upgrade for the LE and customers that know or care anything about the appearance of their cars opt for the SE for that reason. [The LE's 16" steel wheels with cheap plastic hubcaps are the pits.]
Once you've owned the 2GR-FE V6 it's tough to think I4. [28-30 mpg everyday driving .... tons of power .... incredibly smooth].
Since they no longer make the V6 LE, the SE rides too harsh for me, and all the in stock V6 XLE's run well over $30K ..... right now I'd buy a Lexus ES for the extra $5k.
UPDATE: Make that a 2013 Avalon. Spectacular vehilcle just released on Toyota website:
http://www.toyota.com/upcoming-vehicles/avalon/?srchid=K610_p3250326214