MBS & US Treasury Markets
9/11 3:13:58AM EST : Delayed Data

This is definitely one of those "heads-up" type of alerts in that it doesn't necessarily connote a high degree of reprice risk.

That said, prices are down an eighth of a point from highs. The jumpiest lenders have occasionally repriced in similar situations.  

Bottom line: if you were planning on locking before tomorrow's CPI-related volatility, there's no sense in waiting.