If you aren't watching it on iTunes/Amazon, make sure you get the 720p web-dl, best quality bitrate rip out there. Blu ray rips should be out in ~7-10 days or so I think.
Watching now, went in with very low expectations so its not bad but holy shit is it long. 2 hours in now and I need to take a break, still 1 more freaking hour to go. Some really spectacular fight scenes, unfortunately completely obliterated by 15-20 minute scenes where absolutely nothing interesting happens. So glad I am watching this at home and not theaters.