Although Patch 1.13 hasn't added a great deal more, it has atleast restored my faith in Blizzard Entertainment a bit due to the fact that they're still supporting an old game of theirs while other companies simply abandon their old games when they move onto new ones.
I wanted a notable amount of new content as much as the next guy, but I do think people in general are being hard on Blizz in that regard. They indeed used the word 'content', but they were careful to not qualify it with anything; i.e., 'significant new content', etc...
We got new content. Just not as much as most were hoping for. Not sure why all this Blizz hate, e.g., 'They promised blah blah...'
I remember one Bashiok post way back where he specifically said he thought the community was giving the patch more hype than it deserved, so how can we blame them? Can only really blame ourselves.
I was only initially disappointed when the first PTR hit with no TPPK fixes, but eventually those made it in, which is all I was really expecting anyway.
Ladder Reset + TPPK Fix + fixing some duping methods / uber rushing / rune drop rate / respecs / etc....I'm pretty happy with that.
No reason to be disappointed / hating on Blizz for one's own foolishly high sense of expectation. The only thing they reniged on was stash size, and even that was never 'promised', they only said they were trying to do it.