What's new in 5.15 (2012-Apr-20 13:11):

*) ssh - added option "/ip ssh always-allow-password-login" which will allow
   password based login for users using public key;
*) snmp - moved disk oids shown in console from "/system resoure" to "/store disk";
*) certificate manager - added PKCS#8 support for key import;
*) lte - support for modems which utilize sierra_net driver with product ID 0x68a3,
   serial interface is no longer accesable for those modems;
*) quickset - added AP mode;
*) smb - fixed authorization problems, shares should now be browsable;
*) dhcp client - revert NTP settings on dhcp client disable;
*) dhcp server - use DNS server from DHCP client (broken in v5.13);
*) sstp - made it working on Pentium 4 again;
*) webfig - fixed uptime column in hotspot active users list (and other places as well);
*) webfig - hide design skin button if user does not have
  sensitive & policy permissions;
*) webfig - do not allow to upload/download files
  without write/read & ftp permisions;
*) webfig - fixed blank page when logout, undo, redo, hide-menu or safe-mode were hidden in skin,
*) winbox - show connection tracking max entries properly;
*) winbox - make interface name sorting more stable;
*) winbox - do not reset user password when changing it's properties;
*) rb1200 ether6,ether7,ether8 did not support big packets when linked at 10/100Mbps;