If you read the bug reports forums it's fairly obvious where things stand. Khaled has rewritten mIRC to properly support multi-user OSes which means it'll work absolutely correctly under Vista and is quite clearly in the process of fixing bugs. Chances are there'll be two or three rounds of beta testing if it hasn't started already and then I wouldn't be suprised if it comes out around early May. Speculation of course but it makes sense.
It's all well and good saying you're getting impatient but if a bug is missed or a new bug is found that affects you because mIRC gets pushed out early I'm sure you'd be the first to complain that there's an unfixed bug that needs a solution ASAP. Better to take the appropriate time to get things done correctly first time around.
