Many thanks to fiona for the link!
The Mail Online has a post up on 47 Ronin. In addition to the trailer, they have included six nice movie stills from Universal. Hopefully in the coming days more stills will appear.
You can view the article here.
Update: Two more articles have appeared today (Friday, July 26) with movie stills in them. They are here (via google alert) and here (via a tweet from Ayako). Also Bruno Press has thumbnails of stills from Universal so you can see what is out there. If I find additional links with stills today, I will add them here.