Visual Studio 2013 is due to launch 18 October.
Prices are unchanged from the corresponding Visual Studio 2012 products for those who get access to Visual Studio via their MSDN subscriptions.
There will be one change in the SKU line-up between Visual Studio 2012 and 2013. Microsoft will be reintroducing a Visual Studio Professional 2013 Upgrade SKU for customers running Visual Studio 2012 Professional. For a limited time (November 1, 2013 through January 31, 2014), those interested in the VS Professional 2013 Upgrade SKU can get it for $99 from the Microsoft Online Store. After that time, the price will be $299
