So from this info post we can get some more hints and info:
http://www.swtor.com/community/showthread.php?p=6446780#edit6446780
The bounty hunting event thing will be monthly apparently with it happening one week each month it sounds.
Gree event to have a new possible mount drop along with higher level com rewards.
Once again for 2.3 they say "flashpoints", so wondering if it's the two datamined flashpoints folks found while ago or we going to see some old flashpoints upgraded like Red Reaper to hardmode.
As for the pvp update in 2.4 they hinted with "If you absolutely *have* to glimpse the potential future, enter a Force trance and focus on these key phrases. Oricon. Warzone Arenas. Dread Masters."
Oricon being an outer rim planet, assume its new setting for a new warzone. Wonder if arenas will be small WoW like arena system? Dread Masters and pvp? Maybe a new pvp open zone with some narrative with the dread masters... connected to the moon Oricon?
Also the graphic update is being about color vibrancy. So they are brightening up the game? I know lot of folks complained about how so many worlds in the game have a sort of dull color theme to them. Wonder how it will turn out.