I doubt the changes will be THAT big of a deal. The changes last time weren't, at least, they weren't initially. Eventually people have decided what works and what doesn't and we have the jungle we have now. Honestly, its only been this way for 2-3 months, and the remake was like 6 months ago. Even then, it only really, really matters at high elo and in the pro-scene. Stonewall was blogging a few weeks ago about how he's enjoyed Jungle Darius, not because its good, but because Darius is a really good pick if you want to stomp on players who aren't as skilled as you.

From what Riot is saying, this is less of a remake and more of a tweak. Riot recognizes that the jungle evolving into "the bitch role" of league, so to speak, isn't fun. That's kinda what was happening. Riot wants people to have a reason to pick heroes like Riven and Nocturne again, Riot wants there to be a reason for certain Bruisers to build more than just straight tank (really, do you think that Riot intended for the standard Olaf Jungle build to be double gold/10 into full tank items? I don't think so).