I've successfully installed Mojave public beta on my 2011 MBP 13", following this tutorial -
#1122
There is some glitches, though:
1) In light theme mode status bar is not showing properly (dark grey)
2) In dark mode everything seems to be ok, except the menu borders and LCD font smoothing (maybe it is not optimized for non-retina mbps from 2012 and mb airs?
3) Some actions have lag (closing picture viewer window, opening Finder)
I presume it is because the system is in beta state. I will wait for golden master or even 10.14.1.
As far as Xcode 10 works on High Sierra, I will stay here)