Has anyone heard any details about the next generation Accord?
I'm particularly interested in the transmission, engine, and hybrid
options....

You can find out that information in magazines like "Car and Driver"
and "Honda Tuning". For example, they have car shows (that are
discussed in those magazines) each year in several cities where
car companies such as Honda display their "concept cars" which
are cars they will probably manufacture within 5 years. If you visit
a city library, you will probably find all of the 2005 and 2006
issues of Car and
Driver and various other car magazines. Read any of those articles
related to those types of car shows. They show pictures of those cars
and discuss the features of those concept cars.
www.carand driver.com
hondatuningmagzine.com
motortrend.com