A very limited number of JSF planes *may* reach IOC by 2011. Realistically, USAF will not have a meaningful number of f35s (say, upward of 100) before 2014 or so. USN will get theirs even later, perhaps operating a 100 or so no earlier than 2016. Similar timetables are applicable for other JSF partners and operators.
That being said, considering we haven't seen any info on next gen plaaf planes, even if those are discovered tomorrow, it is unlikely meaningful numbers would be tested, produced and fielded before 2018 or so, perhaps later. I guess earlier timeframe *is* possible but then it's hard to talk about true next gen capabilities.
Still, that wouldn't be so bad. at current pace, by 2020 plaaf is bound to be the second most capable air force in the world, in every regard, after usaf.