Edited: What's new in winter '15 for developers?
I was looking for something specific for developers. I ran into some beta versions of duplicate rules, which I believe comes under data.com. I found this https://cs7.salesforce.com/help/pdfs/en/salesforce_winter15_release_spotlight.pdf, a spotlight, which is a light version of the release notes, which is again in beta.
I also checked out that there are some changes to how static resources are being served, I really couldn't figure out what advantages it could have.
Now that I have some specifics, can you please help me out here.