Version 1.2.0 (HARD FORK)
Hard Fork April 2018 - Update Required
You need to update your wallet as soon as possible. With the old version, blocks after height 70913 will not load, or bogus blocks may show up but vanish after the update.
This update implements a new difficulty algorithm and an emergency difficulty recovery feature, larger block size limits plus a number of other improvements and bugfixes.
It also fixes an issue where the wallet synchronization could get stuck.