Well you're absolutely right, though a lot of the crap we accept as news comes from these online sources, car mags etc, all based on rumour, sometimes from "an official source" that is never named.
It's a different thing when a manufacturer prints what is effectively a press release in it's official magazine. That's a more reliable source of info.
Besides, if VW are putting out a 2.0 turbo with 260bhp for the Golf next year (this year?), then I would expect an Alfa 1.8T with 300bhp in 2014 is not far-fetched, given what Alfa has delivered in terms of bhp/cc compared to the competition in past years.
How long such a tiny highly stressed monster would last before it goes pop is an entirely different matter
But when has that stopped Alfa trying in the past?