Facebook may launch iPad and HTML5 iPhone apps at Apple’s Oct. 4th event

Facebook is finally launching its iPad application and will be doing so at Apple’s October 4th event, rumored to be the release of the iPhone 5.

According to Mashable‘s sources, the social network may also introduce its latest iPhone app, potentially revamped in HTML5, at the same event.

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The app has been long-awaited. In July, iPad-wielding Facebookers were given a taste of what may come when screenshots of the app were leaked. The app has been in development for over a year and just this morning Jeff Verkoeyen, the former iPad app lead engineer, quit out of frustration.

Verkoeyen said on his blog that the app was “feature complete,” or the step just prior to release for testing, since May. His frustration stemmed, however, from Facebook’s decision to push the release date back on more than one occasion. He has since removed the information about the app from his post, according to Business Insider.

The push back may have stemmed from Apple and Facebook’s shaky relationship, potentially due to a rumored Facebook product code-named “Project Spartan.” The product is supposedly an HTML5 web app aimed at allowing Facebook to circumvent Apple’s app store. But it seems that with all the labor put into this iPad app-baby, it will actually be born. The mobile and social giants may even partner on “Project Spartan,” according to Mashable’s sources, who also note the “Project Spartan” moniker is not used internally.

Facebook may also release a new iPhone app built in HTML5 at the event. LinkedIn recently redesigned its own iPhone app using HTML5 and coding language Node.js. The new app was very well received upon release.

We have reached out to Facebook and Apple for comment and will update upon hearing back.