FWIW, I don't really regard LR 6/2015 as hi-res aware, either.
Maybe it's better for 4K+ screens, but on this 17" laptop that's been upgraded from a mid-HD (768?) panel to a Full-HD-1080 AdobeRGB panel, it isn't. Both Photoshop AND LR2015 are both squint-worthy apps - making me almost needing my computer-glasses. For LR, setting the interface font to medium is a bit too small, and setting to the next step up - Large 150 - it is WAY too ridiculously big. I've gotten almost all other apps to be a 'viewable' size, but not LR & PS.. With PS being much worse.