Sony Corporation has announced plans to introduce two Android-powered tablet devices from this autumn.

Both devices just have codenames at the moment; the Sony Tablet S1 has a 9.4-inch display, while the Sony Tablet S2 has two folding 5.5-inch displays.

The Washington Post reports that version 4.3 of the iOS Apple operating system has introduced new security for purchases made within an iPhone, iPad or iPod application. It follows complaints that children were inadvertently spending real money to buy in-app features and virtual currency.

Previous versions of iOS didn't require passwords to be entered for in-game purchases made within 15 minutes of an application purchase.

Rovio, the Finnish company that created the Angry Birds series of games, has acquired a $42 million investment. The funding round was led by venture capital firms Accel Partners and Atomico Ventures with participation from the Felicis Ventures fund as well.

As part of the deal, Niklas Zennström of Atomico Ventures - the man who co-founded Skype, Kazaa and Rdio - will be joining the board of Rovio.

Motorola Mobility Ventures has invested in Moblyng, a California-based developer of cross-platform games for mobile devices and social networks. Moblyng games have already been downloaded more than 9 million times to Android, Facebook, iOS and WebOS platforms.

As well as producing its own titles, Moblyng also works with publishers to extend their games and brands to mobile phones and social platforms.

A new report from Juniper Research says the worldwide Mobile Entertainment market was worth $33 billion last year, with this figure expected to reach $54 billion in 2015. It says the rise will be driven by smartphone adoption and an increase consumer-oriented application downloads.

The combination of app stores and smartphones are described as having created 'an unprecedented level of awareness and usage of services' including social media, games, video and streamed music.