The focus might be on iPhone, but there are plenty of other app stores in town.

And with 28.5 million corporates using BlackBerry, its App World remains a place to do business.

RIM is keeping everything up-to-date too, with the announcement of new Visual Studio and Eclipse plug-ins.

Officially labelled BlackBerry Web Development Plug-in for Eclipse and the BlackBerry Plug-in for Microsoft Visual Studio version 1.2, they are part of BlackBerry's tools for web and Java development.

Both tools feature smartphone simulators for testing and debugging projects, and web application profiling for visibility into data traffic, load time and use of web based content.

The BlackBerry Web Development Plug-in for Eclipse enables you to create web applications and content for BlackBerry smartphones within the familiar Eclipse 3.4 environment. Using this plug-in, you can debug and profile Internet/intranet web pages displaying HTML and CSS content, in addition to more complex rich internet applications using AJAX, Silverlight, PHP, ASP, Ruby on Rails, JSP, and Python.

The BlackBerry Plug-in for Microsoft Visual Studio version 1.2 provides an all-in-one tool to create web applications and content within the Visual Studio 2008 environment. Using this plug-in, you can create simple Internet/intranet web pages or more complex, rich Internet applications using AJAX and ASP.Net.

Both are available now from Blackberry's developer zone.