Strad: Kudos on finding the thread. I remembered the conversation but couldn't find it... The 'new and improved' part of the conversation is using BeAl alloys with the 3D printing process, if possible.
I did a bit of searching and found that a number of the available BeAl alloys (Actually referred to as MMC, as Tommy Cookers said.), in solid form (Billet?), are made from powder precursors. I could not find raw powder though. There are a number of research articles on doing 3D printing with the material though, so it sounds like we'll see it soon enough.
Looking at material properties for one of the BeAl alloys it said ~20% lighter than a straight aluminum alloy for the same application. So, with the 3D printing weight reduction of 10% plus a 20% for a BeAl material substitution we'd have a ~30% weight reduction with no compromise other than increased cost. Yes, I am ignoring all of the details that would determine viability of the material switch like thermal conductivity, ductility, etc. Still though, 30% weight reduction, cool.