I for one am very excited to hear 1984. I love a good diss track.

It probably has George Orwell/Big Brother overtones with undertones relating to Taylor. Probably lyrics like "why are you always watching me?" etc. It'd be very clever if she took that approach.
Also I feel Katy's music needs to mature. I loved Teenage Dream but then I was 16 at the time. From what I've heard from PRISM, I only like 'Dark Horse'. 'Roar' is just a cheese-fest, 'This Is How We Do' is okay in a throwaway pop kind of way, 'Birthday' is just a massive low point in Katy's career musically and 'Unconditionally' is dire. I really feel like Katy is too busy trying to appeal to the pre-teen market and in the process is losing her tongue-in-cheek, controversial charm. I miss the girl who sang about kissing girls, and how her boyfriend is so gay and being one of the boys. I don't like PRISM Katy.
Also, so glad this thread I started 5 years ago is still going strong.