I was there on Friday and have stayed there about 4 times in the last 8 weeks. Most of the hotel looks new. The room furniture appeared very new.
I have experienced both the old and new beds. While the newer beds are nice, they are not anywhere near the Westin Heavenly bed. One thing I noticed is that they use a similar white striped duvet, but the filling is a synthetic instead of down / feathers. The new sheets were much softer than the old though.
There was a letter from the manager explaining that are currently installing High Speed internet in every room, but that you can get to "Cyber Space" from the business center. I didn't save the letter, but it almost sounded like they were renaming the business center "Cyber Space". They had one PC running WinXP in the business center connected to a DSL modem (free).
The outdoor whirlpool / hot tub was roped off with yellow construction tape and was being refurbished while we were there.
At breakfast, we upgraded to the hot buffet. Where most Hyatts will simply let you pay the difference, they only gave us $5 credit per Business Plan coupon.
In comparison to other New Jersey Hyatts, I thought that it was much better than the Hyatt New Brunswick, though I think the JC Hyatt has a more interesting modern decor.