I'm going to be bold and say that somebody other than Germany and Russia will win the women's relay, for the first time ever I think.
The Russians could do it; Vilukhina and Zaitseva are locks, and they have other reliable athletes, but Sorokina and Bogaliy-Titovets haven't looked like themselves at any point this season. The Germans, even with home advantage, I'm not sure will. Neuner is obviously a lock, Henkel is consistently up there, but Bachmann can be inconsistent, Franzi Hildebrand is accurate but slow, so will probably need to be 'hidden' on the first leg when lots of people are playing it safe, and may struggle with fatigue and the pressure of a home Worlds at the end of her first pro year, and much as though I love her for the entertainment she brings, I wouldn't trust Miri Gößner as far as I can throw her with a rifle.
The French unit look very reliable - not the quickest, but you can more or less guarantee that Dorin-Habert and Brunet will clear all of the targets with a maximum of one reload. Bescond is coming into form as the season goes on and was surprisingly quick at Antholz, while Sophie Boilley is perhaps the weak point, but has been very slick and professional so far this season. The Belarusians cannot be counted out either; both Kalinchik and Skardino are slow skiers for sure, but they are also reliable and accurate, and often underestimated; Nastassia Dubarezava is obviously not slow - she's a recent convert from XC - and her shooting has been pretty decent too. And of course, Darya; she needs no introduction. The Norwegian unit could be good too; last year they were heavily reliant on Flatland and Berger, but this year Solemdal has come on in leaps and bounds very quickly; Fanny Horn may have stagnated somewhat however, but Elise Ringen has also been very good this year.
If you're a gambler, picking Krystyna Palka to pick up a medal somewhere (most likely the Individual) could be a profitable move; the Pole has been there or thereabouts for much of the year without ever really garnering the attention she probably deserves for it; while some people have got podiums and then some OK results for their good WC positions, she's not had any massively notable finishes but lots and lots of good results up in the top 10-15-20; she's overdue a really good finish.
The men's relay SHOULD be Norway's to lose if the lead men have any form at all; Svendsen, Bø, Bjørndalen, then take your pick for the fourth spot. They'll probably go with Lars Berger again, which will mean potentially the bullets being sprayed all over the place. I say should be, of course, but there can be no denying that the Russians are very, very strong right now, placing several people at the front recently; Shipulin, Ustyugov and Garanichev should be locks, but Malyshko, Lapshin and Makoveev are all people that should definitely merit a look for the fourth slot. Also of course, it's about time for Maxim Maksimov's annual freak show (hehehe). France look to be very strong at the moment, as the Fourcade brothers have both been at the front for most of the season (seriously, what does Simon have to do to get a win?), and Alexis Boeuf and Jean-Guillaume Beatrix have both been looking good recently too; Vincent Jay by contrast has been a bit disappointing but he's a more than servicable replacement.
It's hard to see where the German men get a win from; they might be able to do it with reliability, but they really seem to have just two men at the top right now; Andi Birnbacher is in the form of his life (and how long can it last?) while Arnd Peiffer has seemingly paced his season well to be in form coming into the Worlds, and is mighty quick when he's on it. But those other spots are up for grabs; Florian Graf has looked good recently, but isn't the most reliable; Simon Schempp has had some good results, but most of them earlier in the season, so it seems either his form's going in the wrong direction or other people's form has been improving faster than his; Michael Rösch has been consistent but not electrifying after coming back in from the cold this year; Michael Greis, unfortunately, has just been caught by father time.
The Czechs and Italians could both spring surprises, both have been very good and well-drilled relay teams this year, profiting from other teams' profligacy, mostly with the rifle. You could make a pretty penny betting on one of them to reach the podium, though after the win in Oberhof you mightn't get the odds you would have done previously on the Italians. I'd also be tempted to gamble on the USA - Lowell Bailey has been extremely good for 3 or 4 laps this season, often up in the top 5-10, but falling back later on; the relay is therefore good for him, with just 3 laps. Tim Burke has been in good form in Oslo, and Jay Hakkinen recently picked up his career best results too. They seem to have flown under a lot of people's radars, so they might be worth considering too.
Ah, I hope he'll win World Cup. Everything's perfect except Dasha loses many seconds on the shootings. There's a rumor that Russians can entice her back. I'm afraid of it so much... 
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