HDR is a graphics engine.. thingy.. makes the game look really fresh and beautiful :3 one of the main differences I noticed between C3 and C4.

The sieges are crazy, I was never high level enough to take part but you can find decent fraps videos everywhere. There's one really good vid of a Phantom Summoner helping his clan defend Aden Castle. So many people

C5 preview (English)

They are trying to balance PVP ,every class is supposed to have an edge over at least one other class, so each class has its own 'natural enemy', etc. Not sure how effective this is because as usual buffers are not supposed to shine at solo PVP (I had a SWS and a BD, in 1v1 I usually got my ass handed back to me xD).

As usual though the additions I like most are the new armour (clan armour!)

Aria: Everyone seems ok to speak English if you tell them you don't understand the language they're speaking. Not a lot of SG/MY people play and I think when the PH guys speak to each other it's easier to explain things in their own language so they mostly speak Tagalog. Anyway if you tell them you only speak English they will speak English. The ones who don't are not worth speaking to anyway.