It's very positive, not only an upgrade in quantity but also I think in quality. Clearly some had heard a bigger number was coming and bought recently on the strength of that and then feel the need to sell agin in a few hours. It may be combined with the tail end of the forced Opes Prime sell down.
No matter, at the end of the day you know you're on a winner and short term bumps in the share price are fairly meaningless.