I don't think anyone has proclaimed it "as an all new design."
All semi-automatic pistols, with notable exceptions, are the result of engineering copycatting.
The rotating lock up was pioneered by Steyr, and refined in the Beretta 8000.
Polymer was introduced in the HK-VP70.
Double stack magazines are from the BHP.
Full disassembly without tools was introduced AFAIK, in the 1911.
The take down levers look Glockish, but on this Beretta, one doesn't have to pull the trigger to get going.
The interchangeable backstraps were Walther's idea.
Interchangeable trigger modes was introduced by HK, but the concept is older than that.
AFAIK, the ability to pick between two sizes of magazine release buttons as a standard feature is Berreta's concept.
I couldn't even hazard a guess at who first started putting rails on pistols, but add on ones were around for years before that.
Front cocking serrations are a lamentable development first introduced on 1911s.
The point of it is, no modern pistol is so revolutionary as to be "all new." The most successful ones, with the exception of older landmarks like the 1911, the HP, the Walther P38 and some others I am surely leaving off, are to some level or other rip-offs of the "greatest hits" of weapon design.
What Beretta will undoubtedly be bringing to the table is a respect for good ergonomics that say, a certain Austrian company that shall remain nameless, lacks. A price point better or competitive with current polymer framed duty weapons. The undeniable name recognition. They also bring a certain Italian flair to the old rectangular "pistol in the shape of its box" that so turns me and others off about polymer pistols.
I am going to give this one a try.