Fresh from MTG Salvation, it seems like we're getting the Enemy Fetch Lands we've been salivating over. It seems like Zendikar is going to be another high EV set for opening product. There are going to be a ton of chase rares when the set comes out and discerning which will have staying power is the key to profiting at the pre-release.
It goes without further mention that these fetch lands will be staples in both Standard and Extended. They are fantastic with the M10 duals and the Ravnica duals, and have serious synergy with Landfall. These will be popular to say the least. It seems like they are the surest place to put your stock on prerelease day.
If the hype pushes them past 10 dollars, be careful. Once a land like this hits 15, there's usually nowhere left to go but down. Reflecting Pool was an exception due to its ubiquity, but these are not Reflecting Pool. There will be some great decks that use the synergy of fetch lands and landfall, and it looks like aggro decks are getting some serious tools. So far there have been a plethora of absurdly fast 1-drops, including a 3/2 shroud for G which eats the land you play it with, basically. With so many insane early drops, this format is probably going to be FAST. Any control decks that plan to compete will need to have a good way to answer the Goblin God Draw or be dead to rights before Wrath of God's redheaded stepchild comes online.
At 10, these lands are probably decent pick ups but above that, you risk buying at a peak. There's no way they'll be cheap, but they should hold value for a while due to the relevance in older formats.