Has anyone seen anymore updates on this potential improvement?
http://www.engineering.com/3DPrinting/3DPrintingArticles/ArticleID/7087/Heat-Resistant-PLA-Could-Expand-3D-Printing-Capabilities.aspx
I’ve been using a filament like this for years. It’s called ABS.
Seriously, the biggest advantage of PLA is its low glass transition temperature, which reduces warping of the printed part and generally makes it “easy” to print. A higher-temp PLA blend would behave and misbehave much more like ABS (which might be the reason why you’re not seeing it on the shelves yet), while retaining that whole bioplastic thing. But i’m fairly sure most users don’t care much about what their filament is made from, as long as it works.
I honestly prefer ABS for printing, but there is that guilt factor of it not being biodegradable as PLA… and that’s why I am interested. 
@Kayle-Ann_Lee_Chee , here’s something that will cheer you up then: PLA doesn’t have many local municipalities that are set up for recycling it. It goes into landfills, whereas ABS gets recycled and reused if you just put it in your recycling container. ABS, as of this moment, is actually better because we have the facilities to deal with it.
Interesting @ThantiK , thanks for the info. Something more to consider then!
Not really too sure about “high temp” PLA but I use ToyBuilderLabs PLA which runs at 210C perfectly on my Buko. When I print with filament that’s best at 160C-180C…I notice the parts break a lot easier.