I have been waiting for 5.12 because of an issue I found with SafeMode. It isn’t mentioned so I hope it is in there. The issue is when you use the winbox SafeMode button, changes to firewall rule order like putting your drop rule on top, always a bad idea, do not get released for 20 minutes and then finally roll back. That’s just long enough to give up and drive to the tower in the middle of the night rather than wait it out…

What’s new in 5.12 (2012-Jan-19 14:31):

*) console – allow to specify blank interval on x86 screens;
*) console – changed ‘password’ command, now can be used from scripts and api;
*) winbox – reorganized window layout to match console better;
*) ssh – fixed interoperability problem with psftp based clients;
*) implemented simple SMB (windows file sharing) server;
*) fixed ovpn-client – client stopped working if it was enabled/disabled at wrong time;
*) fixed ipv6 – ipv6 neighbor discovery stopped working when
interface arp setting wasn’t set to enabled;
*) console – minor fixes and improvements;
*) console – added support for compact export;
*) hotspot – added login redirect through http status 302;
*) leds – added default configuration for R5SHPn wireless card;
*) ppp – fixed problem were remote-ipv6-prefix was not given to user if remote-ipv6-pool was
provided;
*) winbox, webfig – sort ethernet interfaces properly when more than 10 exist;
*) added QuickSet to RBSXT, RB411, RB711;
*) user manager – command to create and assign user profile from console;
*) added support for LTE modems (cdc ethernet type);
*) fix gre tunnels on x86 and other little endian machines;

https://www.mikrotik.com/download.html