Yes, thats right, dot hack is coming to an end with this spectacular new full CGI by far surpassing that of Trilogy MOVIE! Here is the trailer

The movie will star one of the newer characters, she actually made an appearence in .hack//LINK PSP game. Her name is Sora and you see some offline activity as well as online this time round.

Does this Sora character have anything to do with Sora of .hS fame?

Same name, different character. This Sora is female.

So you can have more than one character with the same screen-name in that game. I guess that explains why the characters in .hS and .h IMOQ/AB have names like "Balmung", "BT", "Kite", and "Bear", that ought to have been squatted early on in a MMORPG with millions of players.

Actually, this takes place in the year 2025. The game has been updated multiple times. You cant have the same name as someone else.