OnLive, the connected gaming technology company founded by Apple alum Steve Perlman, just received a major dose of credibility in the form of a double-digit round of funding from big, new investors like AT&T. Perlman didn’t disclose the amount, but said it was “much larger” than the company’s first two rounds; an SEC filing shows that OnLive raised $16.5 million from Warner Bros., Rearden LLC and Maverick Capital in 2007. Warner Bros. and Maverick returned for this latest round, along with new investors AT&T (NYSE: T) Media Holdings, Autodesk and Lauder Partners.

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OnLive recently kicked off a beta test of its service, which essentially lets people stream video games through a special “micro-console”, instead of needing an actual Xbox 360, PS3 or Wii. For Warner Bros., the investment fits right in line with its acquisitions of Mortal Kombat-publisher Midway Games and RPG developer Snowblind Studios this year. For AT&T, the investment could point to specific DSL service bundles once the OnLive console actually hits stores (for example, pay ‘x’ amount and get three months of AT&T DSL included vs. the regular price).