Adobe Systems this weekend will debut an updated version of its Acrobat.com hosted-application system that includes 35 new features, a revamped display design and its first mobile application.

Acrobat.com's 6 million-plus registered users access the site to share and store files, access word processing and Web conferencing applications and take advantage of a handy PDF converter application.

The service started out as a freebie until this summer when Adobe (NASDAQ: ADBE) began charging a monthly or annual subscription fee for the full complement of collaboration and file management applications through its Premium Basic and Premium Plus packages. It still offers some free services for users who require limited support.

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