How name file with timestamp?

This file name must be recognisable like README/INSTALL/AUTHORS/COPING/etc.

So user can easily found them and can determine how old project sources.

I think ChangeLog perform such functions but have additional meaning. Or namy be开发者_运维技巧 NEWS?

The most common name is CHANGES, I think. This will have a dated sections telling the reader what significant updates have been made. ChangeLog is similar, but much more fine-grained (e.g. on the level of individual source repository commits).