Have there been new discoveries concerning the perception of taste for the last 10 years?
I'm not quite clear on exactly what you're interested in, but the short answer is yes, there have been discoveries related to the perception within the last 10 years.
The example that comes to mind is the role of the cannabinoid 1 receptor in the sense of taste of lipids.  The full text of a good article is available online here.

Source:
Brissard L et al. 2018. Orosensory Detection of Dietary Fatty Acids Is Altered in CB1R−/− Mice. Nutrients 10(10): 1347.