In the past month, there are a number of revisions in BIP141 and 143. Except the use of BIP9 for deployment, none of these edits was a result of a change of consensus behavior of the reference implementation. Instead, the text were edited for clarifications or corrections to match the reference implementation. The consensus specification (except the use of BIP9) has not changed since early Feb 2016, if not earlier.

History of BIP141 and revision proposals

History of BIP143

https://github.com/bitcoin/bips/commits/master/bip-0143.mediawiki