The 7.0.0-13 system update was released on December 9, 2013.

Change-log

Official change-log:

Added support for Nintendo Network IDs
Added support for Miiverse
Added a Software Update Notification
Removed the limit to system transfers
Changed the start-up method of Nintendo 3DS Camera from the HOME Menu to require pressing the L and R Buttons simultaneously
Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience

Applications

The following applications were updated: System Settings, Activity Log(non-JPN), Nintendo 3DS Camera(non-JPN), Nintendo 3DS Sound, Mii Maker, StreetPass Mii Plaza, eShop, System Transfer, Face Raiders, and AR Games. A new title was added where the TID-High is the application TID-High.

System Settings fix

The NVRAM DS settings vulnerability in System Settings was fixed by adding the following code for the string length fields: before copying the data, the updated function will use the actual max length of the string for copying data if the length from the settings is too large.

System CFAs

NS CFA was updated, 3 new titles with TID-high 0004001B were added as well.

The "area:" archive, an unknown archive, and the "eula:" archive were updated.

The Nintendo Zone hotspot list, CVer, and NVer were updated.

System Titles

Home Menu, Internet Browser, Friend List applet, swkbd applet, and mint applet were updated. 2 new titles with TID-High 00040030 were added.

System Modules

The following system modules were updated: cfg, codec, MCU, PTM, AC, CECD, http, NIM, friends, BOSS, and NS were updated. A new system module was added: "act" for handling Nintendo Network accounts.

FIRM and whitelist

NATIVE_FIRM and the DS gamecard whitelist were updated.

NATIVE_FIRM now supports a new encryption method for certain NCCH sections, when a flag in the NCCH header is set. The keyslot for this is now initialized during NATIVE_FIRM boot from the same function which initializes the 6.0 gamecard savegame keyY, see the NCCH page for details. No 7.0.0-13 system titles seem to use this new encryption, this is likely enabled by default in the CTRSDK version corresponding to 7.0.0-13 for non-system titles: the first known title to use this was the updated version of the eShop YouTube application.