https://mojang.com/2016/04/minecraft-193-pre-release-2/
Here it is, the second pre-release of Minecraft 1.9.3. The first pre-release
last week had some stability issues, but they should now all be solved.
Notable changes:
The server is now more stable
The client is now more stable
Introduced a new bug
Made sure the new bug “should never happen”
Everything is now more stable
Bugs fixed in 1.9.3-pre2:
[Bug MC-87907] - Endermen don’t become aggressive when players look at
their head/feet
[Bug MC-101150] - Notch skin appear black
[Bug MC-101155] - game crashes when opening my redstone world or joining
the server
[Bug MC-101282] - Crash after playing for 1 or 2 hours