If it is news (i.e. new news), you can use the present perfect. It gives a note of immediacy:
1. Ford has released details of its new family car, the Model T.
If you're specifying a time, though, you would need the simple past:
2. Last night Ford responded to fresh allegations that its new family car, the Model T, was in fact a retread of an earlier model dating from 1908.
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