I got mine yesterday. Only had a chance to hit 1 3iron shot of the tee yesterday . They will be keepers for sure.  I got 2,3, and 4 all 2 flat with tour issue x100's soft stepped once.  I ordered them without grips, installed some whiteouts and they swingweight out at D4 which is perfect. 

Thank you titleist for bringing these to retail!!!

I just got 4 iron with DGX100 soft stepped once.  

I was able to give one a shot the other day and it felt pretty good, flight was a little higher than I expected for me but much more forgiving than the 503i that I had. Appearance wise it looks very good, the muscle on the back isn't as low as some of the pictures make it look so it is truly designed for the better player with higher launch and spin. The sole seems to have a little bit of a leading edge entry grind to it so it won't dig even though it has 0* bounce on it. One thing I noticed was that it is easier to hit left than the 503i prototype I had and it seems to have a hair more offset. I haven't decided if I'm going to leave it at 18* or bend it to 19 where my other one was.  The only thing I felt was that it was very heavy in the 2 iron with the X100. For normal Dynamic Gold players I would recommend looking at something like a PXI or DG SL in the 2 iron if you are getting one. If you are also getting the 3 and 4 I would say go with the same shaft in the 4 as your irons and then the 3 iron would be a toss up depending on if its more a fairway club or a tee club. I received mine yesterday and the X100 came out and a 110g graphite shaft is going in as I plan on using it mostly off the tee. 

I hit them about 10 days ago.  My rep had just got his samples, they were literally in the plastic still!  I have to say they feel awesome, look great and fly well.  I didn't order them but I think I will be selling a lot of these to different players this year.