Stuart Rothenberg has upgraded the 29th race to "Toss-Up/Lean Democratic" from "Toss-Up/Lean Republican". Rothenberg is pretty bullish on the Democrats' prospects for Congressional pick-ups: he predicts a gain of 25-30 seats.
Two other raters, Charlie Cook and Congressional Quarterly both have the race leaning Republican. Neither of them are forecasting as big a Democratic gain as Rothenberg.