What's the difference between odd and even Java updates?

Question

I have JDK 8u60 installed. I checked the Oracle website today and they have released two versions simultaneously: 8u65 and 8u66. Both are public release versions.

Answer 1

I found this info on Haven and Hearth:

u73(-b02) is the public release
u74(-b02) is public Bundled Patch Release (contains extra non security related fixes)

I'm thinking you'd only need to download 74, then.