Lightroom 5 has different Font sizes available under the Preferences/Interface tab.
The largest of which scales the fonts to 200% that brings them back to 'normal' size.
Lightroom 4 does not support this font scaling.
And in case you were wondering about the same for Photoshop:
Photoshop CC 2014 released in June 2014 was the first version where they added the font sizes for Windows PC with QHD displays into Photoshop.
It is sort of hidden under "Experimental Features" in the Preferences.
Select the "Scale UI 200% for high density displays (Windows only)" option to get Font size that is usable for 3200x1800 QHD displays
It just seems strange that the one-year-old stable release (v4.4) would be incompatible with an almost-year-old laptop.
Dropping $75 on an uprgrade seems like a steep compromise. I'm going to try and contact Adobe on the matter.
What are you talking about? LR 4.4 is the last LR4 version, where LR 4.0 came out March 2012. Adding something like scalable font support is not a simple change to be added as if it were new camera support. It requires a new major version with newer architecture and newer operating-system calls to take advantage of newer OS features. That takes more than a little work and Adobe should get paid for their effort.
Perhaps you can sell your new monitor on e-bay and wait for LR 6 which will likely be out at some point in the future, then not feel that you’ve been cheated because you paid the upgrade price for a version of software at the end of its lifecycle rather than at the beginning.
Don't get me wrong, I've got tons of respect for the challenges programmers face (Electrical Engineer here).
But Adobe has had a really good reputation for legacy support. They kept activation servers for CS/CS2 online for a full ten years after the CS release, and even then offered free upgrades for anyone who got shut out. It just seems out of character for the same company to say "sorry, that two-year-old program is dead".