So Citadel as many as you know are the official paint dealers for GW! They are re-vamping their range and so far with the rumors or whatever, it's going to be huuuuge! Let us all hope it doesn't get more expensive from Paint => Price Ratio-wise... I mean, it's a tad expensive allready to be honest.
For more detailed information, you should visit BoLS or DFG as they usually post very nice stuff about them rumours out there!