Changes in miles earned

I'll start with an apology if this has been discussed here before - but if it has I haven't seen it and couldn't find it on a search!
Mods please delete if this isn't news!!!
I have just come across the following on the VS website:
'CHANGES TO EARNING MILES - FOR TRAVEL FROM 1 DECEMBER 2008
Important Flying Club changes to earning miles. From 1 December 2008, flying Upper Classes J and D will continue to earn you 200% of the base flown miles, while R and Z will now earn you 150%. In Premium Economy W and S will continue to earn you 150%, K and H will change to 125%. And in Economy Y, B, L and M will continue to earn you 100% of the base flown miles, all other classes will earn 50%.'
I am a bit irritated about this as I am flying in Z to MCO on the 5th December - booked ages ago!
Regards
Ian
Mods please delete if this isn't news!!!
I have just come across the following on the VS website:
'CHANGES TO EARNING MILES - FOR TRAVEL FROM 1 DECEMBER 2008
Important Flying Club changes to earning miles. From 1 December 2008, flying Upper Classes J and D will continue to earn you 200% of the base flown miles, while R and Z will now earn you 150%. In Premium Economy W and S will continue to earn you 150%, K and H will change to 125%. And in Economy Y, B, L and M will continue to earn you 100% of the base flown miles, all other classes will earn 50%.'
I am a bit irritated about this as I am flying in Z to MCO on the 5th December - booked ages ago!
Regards
Ian