led indicator for missed calls, sms and etc

Today I read that L930 and L735 have hardware inbuilt led indicator that will be supported in win10 when it comes out. That would be great if it is true. Someone else heard about that?
Look here http://www.windowsmania.pl/dyskusja-ogolna-497/%5Bwindows-10%5D-pierwsze-screeny-z-nowego-buildu-8-15-12521-nowosci-w-systemie-19983/

Yep, there are already several threads for this topic ;) It looks really good (loving that feature on my Blackberry Z10) and I'd be really glad to have it on my WP...