I have herd next week for months now and I know Huang fairly well... so I dont think there is any way to tell until Huang says "Here it is!!!".
Sux wew have to wait so long but thats what makes it great...
P.S. Anyone else see the new 555 and 556 at the 08' Shot Show?
The EOTech 555 is like the 553 but with longer AA bateries and the 556 is like the 557 but with shorter CR123 battreries.