As far as I know, the retired Sea Harriers have been replaced in RN service with Harrier GR7A/9's from the Royal Air Force on both HMS Illustrious and Ark Royal. They'll remain in service until around 2015, when the first wave of the UK's variant of the F-35 is due.
Correct - however the GR7/9 Harriers have no effective radar with which to detect potential threats and mount an effective CAP over the fleet. Basically in a Falklands scenario there is no way that the Harriers would be able to effectively intercept attacking aircraft, unlike the FRS2 with its excellent radar, developed based on experience in the Falklands.
That means that some of the first wave of F-35's could be operated from either Illustrious or Ark Royal, depending on which of those two vessels is decommissioned in 2014 following the commissioning of the HMS Queen Elizabeth. The final Invincible class vessel isn't expected to pay off until sometime after HMS Prince of Wales is commissioned, which is expected to be in 2016.
I suspect the Invincibles will find themselves quietly decommissioned a couple of years before the QEs eventually enter service (they are almost certain to be both overbudget and late by current standards).
The Royal Navy won the Falklands through luck and the excellent training of its people, much as the land battle was won. Hopefully despite persistant government efforts to belittle and under value the British military it will come out of the constant privatisations and reviews a strong and effective force envied the world over - as it is now...