And while they didn't add native bookmark support (they really seem to want to push this) they have released an official bookmark extension which is also a work in progress. You can get it here: https://addons.opera.com/en/extensions/details/bookmarks-man...
This is one of the things I severely dislike about HN - comments for the sake of commenting, or as someone else might put it - the "no sh*t Sherlock comments". Your point here is discussed in the original story, so there is no reason for you to state the obvious, wasting people's time when they read your comment. Don't worry, you're far from being the only one doing this around here.
"We have neither asked nor forced our 12.x users to upgrade to Opera 15, as we know that some features that are important to you are still to come. So, while you are very welcome to test and use Opera 15, Opera 12.x will still be alive for some time. You can expect that we will keep Opera 12.x up to date and secure. In the future, once we are comfortable with the feature set, we may ask you to upgrade."
Looking at every Opera threat it is clear they have alienated many users already and the way they are responding to those users it's clear they want them gone.
Said users will simply stick to 12.15, given that no other browser (apart from possibly the full-blown Mozilla Suite, which I didn’t test any further) provides a similar experience – including the JS breakage every now and then :)