wraithstrike |
When it says an new ability replaces an original ability that is gained at level X you get the new ability at the same level you would have gotten the original ability at.
As an example if I say ____ replaces the 8th level rogue talent then I get the ability at level 8 in place of the rogue talent I would normally get to select.
Yeah they should have specified that you get it at 8th level since most archetypes spell it out, but it is just an oversight. It does need to errata's however so FAQ'ing it is not a bad idea, if for no other reason than to maintain consistency.