is there any daily ISO build available?

Yes, we have ISO daily builds since yesterday. Download and run http://downloads.elementaryos.org/daily/luna-daily to download the latest daily build. The first download will be large, after that it will download only the the parts that have changed during the day.

However, we could use some help with daily builds because the VPS on which we tried to set it the builds doesn't support loop mounting, and our kernel tricks have failed, so currently the image is built on my PC and uploaded to the server every day. A self-sufficient server would be much better than the current architecture.

well i m building my own every now and then, so i think i can upload them to my server. its not going to be daily, but instead like twice in a week, and they are going to be tested by me before being uploaded.

Actually, the script from elementaryos.org currently doesn't work, use mine instead: http://dl.dropbox.com/u/5279564/luna-daily
This issue should be resolved today.

OK updated the script on the server. Use http://downloads.elementaryos.org/daily/luna-daily

No, the server screws the script. Use dropbox.
http://dl.dropbox.com/u/5279564/luna-daily

it requires a copy of natty

Yes it does, because it decreases the traffic twice. That's not going to change in the nearest future because when webupd8 posted a direct link to the ISO (which is crazy because direct downloads are not checksummed), we were going to run out of traffic limit in a few hours. In addition, it's one more factor to scare people away from the daily builds - they are REALLY unstable (see bug 793169 for example) and don't represent the future state of Luna release (e.g. Slingshot will look absolutely not like it looks now). Probably by Autumn we'll drop the Natty ISO requirement because the images will have much less in common and the builds are likely to become more stable. Hopefully we will resolve the traffic limit issue too.

ISO daily builds taken down because somebody posted a direct link to webupd8 and we were going to ran out of traffic in several hours. However, if you still want a daily build, branch lp:elementaryos and follow the instructions in README.

i have unlimited bandwidth in my server so there shouldn't be any problems . i will try to maintain it until the final luna release.

Thanks Sergey "Shnatsel" Davidoff, that solved my question.