you won't find anyone who's actually been to the Grande Ocho Rios since it doesn't open till january. unfortunately, sandals isn't giving any info on the two new resorts other than what they've got on their websites. you'll find a lot of people over at cheryl's board at http://www.chris-n-cheryl.com that have been to sandals resorts and you can ask about the ocho rios property and the old beaches grand sport, but no one's going to be able to tell you about the newly renovated grand area until january.
Your travel agent should have some of the new brochures from the resort. I received mine about a month ago. There aren't actual pictures from the new resort in the brochure, but it expains everything about the resort.