I'm not quite sure what you mean, are you talking about the actual age of the tracks involved? Are you asking if they sound like the past or what we imagine the future to be?
Personally I think the only way to find the future in music is to know the past. Grime for me sounds a lot like the potential that some techno, industrial and hiphop have had. There is an interest in grime to "push things forward", but a lot of the sound has a basis in that strange nexus between UK Garage, dancehall, and hiphop. So more avante-garde than archaic. Although I wouldn't call it that.
And grime as a tag is just a label, there are a lot of emcees and producers who would call it something else.