So I got this email from 'Jagex' saying that since my email was registered I could visit RSC before the public release occurs, yet the hyperlink is www.runescape-classicbeta.com . I haven't seen this one fly around before so I'd suggest you guys watch out.
They open RSC for 1-2 weeks every 6 months I believe, Also this email was not sent to my spam folder although I am using hotmail. Jagex also emails you newsfeed only if you're subscribed, so it could trick those who are subscribed to them.
Thats why you never click on any link sent through email. If you are really concerned about your Runescape go to account management and login from there not a link sent through a email claiming to be Jagex