Delegates are still free to upgrade but must be aware that there a crashing issue has been identified.
Upgraded but have make one weird observation...
at some time:
"wallet_unlocked_until_timestamp": "
1910-03-19T05:05:04",
"wallet_next_block_production_time": "at least
70 seconds in the future",
"wallet_next_block_production_timestamp":
nullafter the time has past for wallet block production my wallet don't produced the block....
EDIT:it happens often to see now:
"wallet_next_block_production_timestamp":
null