Played it several times at Xmas. The most obvious changes have already been mentioned ie. new green at the 3rd, new tee at the 12th, new greens at 17 and 18. The other less obvious changes are that I am sure they have put in a new tee at the 9th and the bunkers, which are quite significantly deeper than 2-3 years ago.
The best of the new features is the new Championship tee at the 12th which has been carved out of probably the biggest sandhill on the course, lengthening the hole by approximately 50-60 yards and giving a panoramic view of the hole and the final 6-7 holes.
How will it play for the Open? Well I suspect it will be very fast and they will grow the rough to make it quite narrow. At Xmas it was, despite some fairly typical UK weather, very firm under foot, certainly much firmer than Royal Lytham. I also think it will favour a player with a good short game as some of the greens are very difficult to hold ie. 10th and the 12th.
If I had to hazard a guess I would have thought it would favour a golfer used to harder, firmer ground, a long hitter able to get close enough to hold some of the greens and take advantage of the par 5s. I will be fascinated to hear the American response as Royal Liverpool is significantly different in many respects than any other Open course. Certainly, there is nothing else in the world like the Kop which comes into play most significantly at 1st and 16th.
I do wonder whether the other factor will be the noise? It is fairly flat ground with the exception of the run from 9 through 12, not featureless but certainly not as dominated by sandhills as some other courses. The golfers will be able to see and hear plenty of what other players are doing on holes which do offer birdie opportunities ie. 13, 14 and 16. Certainly anyone in the last group with a two shot lead standing on the 12th will have a very nervy passage home.
Is it worthy of the Open? IMHO yes !!! It is not the most picturesque Open venue, its not the toughest (I personally would vote St Georges for that perhaps Carnoustie) but it is very British, surrounded by Edwardian housing, sometimes a little cramped and claustrophobic and dominated by the wind.
I think it will be great and I can't wait !!!
Tom