UT4 has 4.7 full source?

Hello everyone…

I want to know if I download UT4 from github, will I get the latest updated 4.7 source along with it.

The UT4 development is done on the master branch i guess. SO is there a chance things might be buggy?

Yes, the latest source should be there. You can choose which branch you want, for example 4.7.