A little bit eclipsed by the announcement of the 1DMrkIV, the announcement of an upcoming firmware update for the Canon 5DMrkII that would give it 24p and 25p is, for most people much more news worthy.
The first benefit of shooting in 24p is, of course, getting the elusive film look we have been talking about since almost a year.
I personally dont care too much for 24 vs 30p. The important element in this news for me is how Canon is going to implement this feature. Are they just going to drop down the frame rate so we can record longer clips or are they going to use the 20% saved bandwidth to increase the bitrate?
We wont know until next year (please make this January!), which make me wonder how it could be so long to implement such update.