perldeltas ought to still work (click the download code link) ... but its the verbose version (2.2MB) ... you can however trim the headings with Pod::Simple or with XML::Libxml or some such tool :)

A little snippet from the headings/TOC

p5200-Core Enhancements

    p5200-Experimental Subroutine signatures
    p5200-subs now take a prototype attribute 


p5180-Core Enhancements

    p5180-New mechanism for experimental features
    p5180-Hash overhaul
        p5180-Hash randomization 


p5160-Core Enhancements

    p5160-use VERSION
    p5160-__SUB__
    p5160-New and Improved Built-ins
        p5160-More consistent eval
        p5160-substr lvalue revamp
        p5160-Return value of tied 
     

p5140-Core Enhancements

p5140-Regular Expressions

    p5140-(?^...) construct signifies default modifiers
    p5140-/d, /l, /u, and /a modifiers
    p5140-Non-destructive substitution
[download]

Get it, try it out, still works :) I just tried it, 2.2M perldeltas from p5004 to p5211