Appcelerator Titanium platform beta has been released with new mobile functionality that allows developers to use the Web capabilities they already have to develop rich applications for both iPhone and Android mobile devices.

Apple today previewed its iPhone OS 3.0 software and announced the immediate availability of a beta software release to registered developers. The iPhone OS 3.0 beta release includes an updated Software Development Kit (SDK) with over 1,000 new Application Programming Interfaces (APIs) including In-App Purchases; Peer-to-Peer connections; an app interface for accessories; access to the iPod music library; a new Maps API and Push Notifications.

How you go about developing software for mobile devices depends primarily on which platform you intend to develop. While there are many large players competing in the the mobile platform market, there doesn’t seem to be an obvious winner.

The .Net Compact Framework and Java ME top the list of platforms being targeted today by wireless developers, according to a survey of 384 professional developers working on wireless apps conducted last month. Forty-two percent were targeting each platform. Linux and Windows Mobile 6.0 trailed behind, while Android and Mac OS were being targeted by fewer developers than any other major platform with only 7% of wireless developers creating any apps for either of those platforms.