D.Gray-Man is released monthly so chapter 204 should be out in early March (around the 4th) but it's release also depends on how long it takes to translate and upload.
it did
It starts at 172
february the 4th. Its a monthly manga.
June 2012, It is out. Been out for a while, infact now we are waiting for chapter 215.
it has already come out in Japan in the March issue.
The writer right now, has a wrist injury, which is why it's on hold. However, reports say that she is doing well, and JUMP announced that D. Gray Man will reume in April. Serialization of the series has resumed in the monthly publication Jump Square by Shueisha/Jump Comics. Chapter 193 was released in early April 2010 in Japan.
D.Gray Man manga updates about once a month. Slow, I know. :P
It will come out on the 4th of November on Jump Square
As far as I know, it will update recently, maybe today or tomorrow!
Arystar Krory will not die but he will be comatose I think he will manga chapter 159
Assuming Hoshino (The Author) doesn't get sick again, 215 should be available by the 4th of July.