Yes it was cancelled in 2012 but ran again last year.
Very good event this one, I try to go every year and use it to pick up some bargains ready for the rest of the years boating.
If you ignore the usual stands selling brand new stuff at shop prices, and those selling junk at daft prices, there are usualy some gems hidden away. But it's huge, so you need to allow plenty of time to walk around and find what you need.
The section of 'true' jumble stands where you can turn up and sell out of the back of your car is really worth a good look round.
As usual the only really bad thing is the price of the truly crap food on offer, so I'd suggest you take sarnies or at the least a packet of anti-acid tablets.