The only options I've found so far are either using something like RedLion's Data Station Plus (which is a box with HMI software, but no monitor, and can be hooked up to a pc with a web browser) or Rockwell's FactoryTalk View software (which still needs a pc to simulate the HMI screens).
Only other idea was to possibly use something like the RedLion product and hook it up to a TV with a built in web browser (these tvs are now becoming available). Not sure if this is possible.