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U mean manhattan or the city of new York? Because I live in staten island so I would say it hasn't got much better but I always have coverage just not perfect coverage. and as for manhattan I'll be there tomorrow so I'll see.
 
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Generally speaking, AT&T has definitely improved in NYC. I have an AT&T iPhone 4 and picked up a verizon model yesterday because I have a few "problem areas" where I do repeatedly get phone calls dropped and low signal. Low and behold, the verizon model barely got a signal in the same area, and kept switching between 1xRTT and 3G. And through and through, I find that AT&T 3G is significantly faster than Verizon when out and about, which has been reported everywhere.

Places I frequent for comparison:

UWS, hell's kitchen/central park south area, and Washington Heights. Also was on staten island yesterday and didn't discern a difference in signal quality near me and definitely saw the same speed difference.
 
Is the coverage in NYC getting any better?

It's spotty and unpredictable at best. Just to give you an idea, I was at my buddy's apt yesterday in Hell's Kitchen and he got full bars and 3G but in Soho, he barely got a signal and no 3G service.
 
I was in Manhattan a month ago. Service seems to have improved over 2 years ago. I would like to test verizon with my new one next time I'm out.
 
It's spotty and unpredictable at best. Just to give you an idea, I was at my buddy's apt yesterday in Hell's Kitchen and he got full bars and 3G but in Soho, he barely got a signal and no 3G service.

Seems to be problem in SoHo?
 
The service in NYC has improved dramatically over the last 2 years. They are constantly adding new cell sites in Manhattan.
 
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