It's been quite some time, but there's some major news.
First, pictures of the "Revenge of the Mummy" ride construction can be found on the official website itself.
Singapore | e-News Bulletins - RWS Quarterly Update - Issue 06 | Resorts World at Sentosa
2ndly, in the webcast on the same page, some interesting tibits :
- the dueling coasters are theme to Battlestar Galactica
- one is more intense with inversions and loops, the other more 'mild' with drops and bends.
- The coasters are in the 'Sci-Fi City' area of the theme park. (together with transformers ?)
- Family friendly rides in all areas of the part, like a Jeep ride thru egyptian ruins, etc
Looks to be exciting.