Coming in here to say what I always say to people like jjnumbersandletters and other park based staff, even management...
The rumours you've heard may well be true, and even more likely, they may well have been true at some point in history[\]. By the time they get through to rides staff and then enthusiasts, they're so far out of date they've been scrapped or changed beyond recognition.
The RMC rumour is kinda different, its come from a completely different route. That doesn't mean it's 100% accurate or won't change, but it is more likely to be true.
I can't tell you how many rumours I heard through working in rides that people were 100% certain were true that just never happened. Some obviously misunderstandings, some legit sounding.
As a harmless out of date and obviously ridiculous example, "Stealth is made out of left over parts for Rita." Some rumours I heard were less obviously false, though. Most of the stuff that ended up actually happening was very last minute and out of the blue, only hearing of it weeks in advance of official release, which just shows how long it takes for rumours to filter.
Either way, telling everyone in here where you work and spreading sensitive information is, believe me, risky business. Be caaaaaareful. Take everything you hear with a grain of salt. Rumours are fun, speculation is fun.
Thinking about themes..... Hmm, something like, an old machine that was used to excavate Nemesis that has been taken over by OR they've uncovered again to help fight it?