Nintendo of Europe states both the gamepad tablet high-capacity battery and Wiimote rapid charger will be arriving in Europe between late September to early October.
http://www.gonintendo.com/?mode=viewstory&id=212821
Sega revealed some new details regarding Sonic Lost World such as enemies from every Sonic game make an appearance, a jungle level was inspired by Sonic and Knuckles, and tutorial levels are completely optional.
http://www.gonintendo.com/?mode=viewstory&id=212863
Sega also revealed a bit about the game's co-op and online features such as there is a special twist involving leaderboards and races.
http://www.gonintendo.com/?mode=viewstory&id=212906