Asking just to make sure. Have seen this rumor here and on HardForums. Saw a few times that there is a new panel lottery on the Rev 04 Dell 2407 and that one could get either an S-PVA or S-IPS. Someone even wrote that a Dell rep confirmed this.
I dismissed these rumors, but now I find the Dell Monitors Page on Wikipedia lists the 2407 with a possible S-IPS.
It should not be too complicated to check the factory menu to know if some of those 2407's are in fact S-IPS
EDIT: Considering discussion in this thread, I removed the reference to S-IPS availability for 2407WFP on the above Wikipedia page.
I dismissed these rumors, but now I find the Dell Monitors Page on Wikipedia lists the 2407 with a possible S-IPS.
It should not be too complicated to check the factory menu to know if some of those 2407's are in fact S-IPS
EDIT: Considering discussion in this thread, I removed the reference to S-IPS availability for 2407WFP on the above Wikipedia page.