GTHD will have a mode dedicated to drifting, "drift contest"👍 , probably not meaning that any game physics are changed, but that they judge you on your drifts, this will be an online option for sure, and will probably be an offline option to.
As well announced thier will be: color/livery editor
time trials
track day
photo mode (lol
)
club builder (sweet I can make a drift club!!!👍 )
team builder (sweet i can make a drift team!!!👍 )
voice chat (sweet I can trash talk to grip racers!!! jk thats not my style
)
license test
online garage
settings/tuning
race builder tool
and of course all of the other normal modes, like head to head, and b-spec (wait is b-spec normal
)
These are all online modes
This has all been announced to be on GTHD online, which obviously put PS3's online to good use, as well expect to have a very active online community
Here is the vid showing explaining this, as well somewhere near the end it mentions something about the online store???
http://www.gran-turismo.com/jp/movie/index.do?id=373