I do(起强调) sincerely await the coming of the good news as for that day.
I'm sincerely expecting/anticipating(2选1) the arrival of that day's good news.
I just look forward to the advent of the good news for that day.
供参
I'm looking forward to hearing the good news someday.
I'm looking forward to the day the good news arrival.
I am going to look forward to that day when the good news will come about.