As of March 13, 2020, the Testnet and Devnet validators have been upgraded to rippled version 1.5.0-rc2.
The 1.5.0 release of rippled will include at least two new amendments:
00C1FC4A53E60AB02C864641002B3172F38677E29C26C5406685179B37E1EDAC RequireFullyCanonicalSig
89308AF3B8B10B7192C4E613E1D2E4D9BA64B2EE2D5232402AE82A6A7220D953 fixQualityUpperBound
If you would like to review and test the latest proposed amendments in rippled, check out the code on GitHub.