I think its better for me to hold on first untilbefore summerprobably because I don't want to regret if I'll get either the 24-105 or the 24-70. For sure the price for the 24-70 IS (if ever) will be really high & hopefully they'll drop down the price for the non IS version. Butif they'll be releasing the 24-70 IS version, what will happen now to the 24-105?