Cardinal apparel.jpegAt the moment there are 112 cardinal electors should we have to elect a new pope. The papally imposed number of 120 is usually enshrined in our minds but we can conceivably have more (or fewer) should a reigning pontiff decide the matter. Pope John Paul II confirmed certain norms in a document Universi Dominici Gregis in 1996. Nevertheless, in 2010, 11 cardinals of the Holy Roman Church will lose their ability to vote in a papal conclave because they will turn 80. Their Eminences, Cardinals Ambrozic, Maida, Williams, Herranz, McCarrick, Poupard, DiGiorgio, Daoud, Giordano, Tumi, Pujats. You’ll notice that 2 are from the USA and 1 from Canada.

Pope Benedict has already had two consistories (2006 & 2007) making 38 cardinals. Mind you, some were ineligible to vote in a conclave from the first day of the cardinalate.
So, it is very likely that the Holy Father could create new cardinals in 2010.
Regarding bishops, at the moment there are, in 2010, 11 bishops submitting a letter of resignation to the Holy Father because they’re 75, there are 4 who turned 75 in 2009 (and no replace nominated yet) and there remain 6 empty dioceses. If no one dies or gets into trouble, the USA could see 21 new bishops.