The official Trumpeter website doesn't have any news on this. But I'd bet one should be in the works (huge sucker it'll be too, a 1/32 Flanker/J-11) since its their domestic country's premier fighter.
They have been strangely absent on the Flanker/J-11 kits, which is wierd considering its their country's best fighter. I'm hoping its because they are taking the time to do a proper and accurate kit.
Which sites stated it will be released? I'd like to take a look.