If things continue as they are with energy prices dropping further or even staying as they are, I can't see rates going up at least in the first half of 2015 and probably not at all in 2015. The only thing that might change that is if the dollar really strengthens much more quickly this year, against most other currencies, including GBP, which is quite possible.
Squeaky bum time for all those developing nations like India, Brazil, Indonesia, Russia, Venezuela etc, where they have dollar denominated loans and trade in a collapsing local currency,

and double squeaky bum time if they rely on energy exports. IMO it couldn't happen to two more deserving presidents than those of Russia and Venezuela.

Russia has officially about $390bn of foreign currency reserves left, unofficially there are quotes as low as $200bn, so it is probable somewhere between these figures. Even if we take the higher one, Russia is burning through at least $10bn a week trying to prop up its currency ($23bn in the last 2 weeks). If things carry on as they are, this means Q4 of 2015 is going a very interesting one for Putin. Where his inner circle consists mainly of GRU / FSB buddies, who tell him what he wants to hear and where he is meant to hate economics and central bank officials struggle to get an audience with him, I think that may change out of necessity soon.

Russian industry also owes $125bn in loan and bond repayments in 2015, which can't easily be extended where sanctions have essentially closed their access to capital markets.